Department of Philosophy
Are there universal principles, categories, or forms of reasoning that apply to all aspects of human experience—irrespective of culture and epoch? Numerous scholars have explored this very question from Africana perspectives: Kwasi Wiredu (1996) explored the philosophical issue of whether there are culturally defined values and concepts; Hallen and Sodipo (1986) examined the question of whether there are unique African indigenous systems of knowledge; Ngũgĩ wa Thiong’o (1994) evaluated the role of colonialism in the language of African literature; Oyer̀ oń kẹ́ Oyěwumi (1997) argued that “gender” is a Western cultural invention that is foreign to Yorùbá systems of sociation; and Helen Veran (2001) argued that even though science, mathematics, and logic are not culturally relative, “certainty” is nonetheless derived from cultural practices and associations. Building on these and other works, this essay argues that: (i) incommensurability of “worldviews,” “perspectives,” “paradigms,” or “conceptual schemes” springs from deeper, more fundamental cognitive categories of logic that are coded into natural languages; and that (ii) consequently, as long as African reflective reasoning is expressed solely (or predominantly) in European languages, the authenticity of the “African” in African philosophy is questionable.
Introduction: Logic and African Philosophy
I propose to consider the African philosophical traditions via an examination of the soundness of Syllogism A. The use of abductive generalization as a method of proof will be crucial to demonstrating the truth of premise 1.
All philosophy is cultural
Yorùbá thought is philosophy
∴ Yorùbá thought is cultural
all P* is C
y is P
∴ y is C*
I will proceed in this manner:
Following Harry J. Gensler’s well-formed formulas (wffs) and his rules for syllogistic logic, I will very quickly show that Syllogism A is valid; then, Devote the body of this article to establishing the soundness of Syllogism A; and then,
Conclude by drawing out the implication of premise 1 as follows: any type of African thought that is “philosophy” must also of necessity be “cultural philosophy.”
I will then further draw the disturbing and paradoxical grand conclusion that the growth of philosophy in Africa is leading to the demise of African philosophy! For as long as we continue to conduct philosophy in Africa solely (or mainly) in European languages, the concepts, categories, and worldviews embedded within our philosophical products will predominantly be European and not African.
Proof and Culture
I define the terms well-formed formula, distribution, validity, the-truth-insoundness, culture, and deductive generalization as follows: Well-formed formula: A well-formed formula (wff) is a sentence in syllogistic language having any of these eight forms:
all A is B some A is B x is A x is y
no A is B some A is not B x is not A x is not y
Distribution: Each instance of a letter in a wff is distributed if and only if it occurs just after “all” or anywhere after “no” or “not.” Hence, only the underlined letters in the wffs above are distributed.
Validity: A syllogism is valid if and only if it passes Gensler’s two-step “star test”:
i. “Star premise letters that are distributed and conclusion letters that are not;
ii. The syllogism is valid if and only if every capital letter is starred exactly once and there is exactly one star on the right-hand side.” (Gensler 2010, 10)
Syllogism A passes the star test and I will henceforth take it as unquestionably valid. (For proof of the star test, see Gensler 1973.)
The-Truth-in-Soundness: Soundness is validity plus true premises (yielding, therefore, a true conclusion). But what is truth? Following Kwasi Wiredu’s analysis of the Akan conception of truth, I accept that truth is opinion; that any item of information that is labeled “true” is always someone’s truth—that is, an item of information must have been identified by, discovered by, and defended by some person at a specific point in time before “truth” can be ascribed to it.
This has some implications:
i. Truth is not objectivist. That is, truth is not timeless or eternal because any item of information that is defended as true by someone may be shown to be a falsehood by someone; ii. Truth requires cognitive agency; it is an activity that requires language, reason, perception, and inference.
Culture: Culture is the manifestation of human intellectual achievements collectively and universally as a “grouping.” Culture has three dimensions or layers:
i. Communal culture (CC) is at the level of group psychology, which I here define as the shared set of beliefs, doings, and practices that makes up the communal bank of a group’s achievements. Communal culture is observable. For example, the use of the English language and the Spanish language in the United States are manifestations at the level of communal groupings. Other examples would include modes of dress, types of food, etc.
ii. Internal culture (IC) is individual psychology, which I here define as the mental characteristics or elements of grouping psychology as imbibed, absorbed or assimilated in a person. E.g., Kọ́lá’s use of the English language in writing this article; or John’s conception of the professional attire as a business suit in dark colors and of a conservative cut; or Mary’s claim that 2 + 2 ≠ 10 because she only counts in base 10 (and not in base 4 where 2 + 2 = 10); are all elements of “grouping psychology” as imbibed by Kọ́lá, John, and Mary respectively.
iii. Nomological culture (NC) is sociobiological psychology, which I here define as habits or customs of the human mind that have resulted from evolutionary groupings that now function as prerequisites for human cognition and inference. E.g., the capacity to form generalizations and their usages as inferential warrants in thinking (Abiḿ bọ́la ́ 2013b and 2005); or the indispensability of a conception of space/time to human cognition; or the innate capacity of humans to communicate with spoken languages.
Therefore: Any product of thought designated as “philosophy” is cultural philosophy if and only if it is impossible to convey that thought without reliance on collective manifestations of human groupings of the CC, IC, and NC types.
I should add that communal, internal, and nomological cultures are distinguishable but not distinct. They come in a package deal as the three sides (obverse, reverse, and edge) of the same coin.
Abductive Generalization: The principle of abductive generalization can be stated as follows:
Suppose that something is true in the first case, and assume that if it is true in any n case, then it is also true for the n+1 case. Then that something is true in all cases.
This has two properties:
Base case: Show that something is true for the first case. I.e.: P(1) is true, and Abduction step: Assume that if any one n is true, then it is also true for n+1. I.e.: P(n) → P(n+1) for all cases of n.
This method of proof can be stated formerly as follows: [P(1) ∧∀n (P(n) → P(n + 1 ))] →∀nP(n)
What I have called abductive generalization is more commonly known as mathematical induction; but since it operates more like abduction (or inference to the best explanation) than induction, I refer to it as abductive generalization.
Abductive generalization can be defined as the converse of inductive generalization. Q → P is the converse of P → Q; All P is S is the converse of All S is P. In inductive generalizations, we find a generalization such that all examples can be derived from it; whereas in abductive generalizations, we find a generalization that can be deduced from all examples.
It could be objected that the specificity of my definitions is unnatural; that the meanings of these terms ought to be established by examining their semantic expressions in ordinary language. But that would be absurd. Philosophy, as I shall argue, cannot run solely on monadic semantic expressions that are devoid of a meaning-use duality. Understanding the statement “she took out her key and opened the door” implies that she opened the door with the key she took out; and that is an understanding that does not just inhere in the meanings of the words; but also in their usage; and therefore also in cultures CC, IC, and NC. Simply put, understanding is not just about the semantics of sentences; it also includes the pragmatic process of meaningful usage that Grice calls “conversational implicature” (Grice 1989); a process within which the philosopher and her cultures cooperate in concert to produce second-order thought.
History and the Nature of African Philosophy
At least three ways of doing history can be identified: history I, history II, and rational reconstructions. History I is about the constellations of facts. It is about recording factual events that have occurred in time. The “facts” are often conceived of as “observable” and “real” things that are (or were) in existence, and have (or had) independent positivity in some sense. History II is concerned with the development or evolution of ideas and their roles in human understanding. Just as we can have chronological accounts of observable facts in history I, we can also have chronological accounts of history II concepts. I could give a chronological account of schools of thought such as: ethnophilosophy, sagacity, Afrocentricity, the phenomenological approach to African philosophy, and the socialist/Marxist approach to African philosophy. Moreover, a chronological account of these ideas, concepts, or schools of thought could also be interpretative. (See, for example, Oruka 1981.) For instance, in the chronological ordering of ideas, Africentrics could reflect on the similarities between the Egyptian ethical principles of Maat, the Yorùbá concept of ìwàpẹ̀lẹ,́ and Aristotelian virtue ethics; and they could assert the international dominance of Egyptian culture by maintaining that ìwàpẹ̀lẹ́ and Aristotelian ethics originated from Egyptian culture.
Rational reconstruction is historiography. In this context, it is the study of the history and methods for doing the history of African philosophy. It involves a dialectical interaction between histories I and II, an epistemological thesis about the sources of historical knowledge, the methods of historical knowledge, and an axiology. Rational reconstruction in this context is a meta- epistemological stance on the nature of African philosophy. In doing rational reconstructions, the historian generates her own methods (or relies on a specific method) for the study of historical material as well the specific body of works to focus on.
How then should we write the history of African philosophy? On the basis of history I, history II, or rational reconstructions? As Collingwood rightly pointed out, “the historian’s picture of the past is [. . .] in every detail an imaginary picture, and its necessity at every point is the necessity of the a priori” (Collingwood 1978, 244). One way of interpreting Collingwood’s claim is that it is the historian’s engagement with the past that makes or creates the events as “historical facts.” Every knowledge claim about the past is of necessity constrained by various factors: the fact that the events are no longer there for us to observe, the fact that we now have only a selective section of the sequence of events that transpired, and above all the fact that interpretation plays an indispensable role in everything the historian records as historical fact. There would be no historical fact without the historian. And consequently, it would seem to be the case that we can never genuinely have a history I account of the history of African philosophy, for each “constellation of facts” about the past requires the grouping or clustering of things that are related in a particular way, and this must of necessity go beyond the “observable,” the “real,” and beyond constituents of human existence that have (or had) independent positivity. Any so-called history I account of African philosophy will ipso facto be a constellation on the basis of a history II construct such as Afrocentricity, sagacity, analytic philosophy, or Marxist philosophy. Any history
I account of African philosophy will of necessity be a priori because it will constellate facts on the basis of an imagined picture. We cannot have history I without the constituents of history II, mutatis mutandis, a rational reconstruction.
Consider, for instance, the following claims by Lefkowitz:
I use the term philosophy in the more specialized, modern sense, to mean the study of causes and laws underlying reality or a system of inquiry designed specifically to study those laws and causes. The ancient Egyptians and Babylonians were learned and had what we would now call advanced civilizations; they could have developed an abstract terminology for discovering causes and principles had they chosen to do so. But they did not study and analyze the nature of reality in abstract, nontheological language. This specialized notion of philosophy was invented, so far as anyone knows, by the ancient Greeks. (Lefkowitz 1996, 188–89; my italics.)
First, based on the accounts of many other accepted super-rational reconstructions (i.e., other accounts of what philosophy is), Lefkowitz’s account of philosophy as “the study of causes and laws underlying reality” jettisons from philosophy sub-fields of knowledge such as ethics, political philosophy, and aesthetics, which are not in the business of doing metaphysics and ontology. Hence her definition of philosophy is too restrictive.
Moreover, even if we accept Lefkowitz’s own criteria of philosophy as “the study of causes and laws underlying reality,” or “a system [. . .] to study [. . .] laws and causes,” or analysis of “the nature of reality in abstract,” there are numerous examples of African thought systems that meet these specific criteria. Theophile Obenga makes this point poignantly as follows:
Egyptian thinking was graphic and abstract at the same time. Pictures were used as symbols of thought. [. . .] The Egyptians did develop a kind of semiology by studying the relationship between signs and pictures, using material objects to represent something invisible or abstract. This is not to say that the Egyptian philosophers thought in graphic and concrete terms. They made use of graphic and concrete forms to think abstractions. This may seem quaint for the modern mind, because of the alphabetical system of writing. In fact, semiotic structures in hieroglyphic signs were a fine equipment for precise abstract thinking. (2004, 34)
Lefkowitz’s account is based on a rational reconstruction that is the product of a self-created constellation of historical patterns. But so too is Obenga’s! The judgment that Obenga’s rational reconstructions are better than Lefkowitz’s requires: (i) assessing them on Thomas Kuhn’s fuzzy criteria of simplicity, accuracy, consistency, and fruitfulness (Kuhn 1977; Kuhn 1962); and (ii) searching for a super-rational reconstruction on the basis of which both of these options can be judged.
I submit that Afrocentricity, sagacity, Bantu philosophy, the Lefkowitz account and its Obenga critique, or any other rational reconstruction, will never succeed in capturing the essential nature of African philosophy because each rational reconstruction in part creates its own scheme of fact, methods, and values. Rather, in varying degrees of success or failure, they rationally reconstruct the different and changing patterns of the intellectual circumstances and possibilities that originate from Africa. We are still none the wiser on the essential nature of African philosophy.
Doing history I requires a prior knowledge of elements and concepts of history II;
The elements and concepts of history II are of necessity biased because they contain within themselves their own yardstick for what should count as fact, the methods for conducting historical research, and their own axiology of values; and, As such, a mere constellation of history IIs (Afrocentricism, sagacity, analytic philosophy, etc.) will never yield a full picture of what African philosophy is. We need to engage with the essential nature of philosophy in itself and African philosophy’s share of it.
Premise 1: All Philosophy is Cultural Philosophy
I want to prove that the first premise of Syllogism A is true. Let us label this premise as: abductive generalization I (AGI).
AGI: All philosophy is cultural philosophy. It is impossible to prove this statement by induction for there will be an inference gap in the reasoning since the premises of an inductive argument will never entail its conclusion. We also cannot prove this statement by deduction because deductive reasoning is non-ampliative, and unless AGI is already covertly (or explicitly) contained in the premises of that deductive argument, the truth of those premises will never guarantee the truth of AGI.
Hence, I will advance a proof by abductive generalization. AGI asserts that the property “cultural philosophy” holds for all philosophical systems 1, 2, 3, 4, ad infinitum. The proof will proceed as follows:
Base case: P(1) is true (where P(1) is the following): Suppose that “philosophy is cultural philosophy” is true with respect to thoughts expressed in the English language (i.e., the first case); and, Abduction step: P(n) → P(n+1) for all cases of n Assume that if “philosophy is cultural philosophy” is true in philosophy expressed in any unspecified language (i.e., the nth case), then it is also true for any language we choose after that nth case (i.e., the n+1th case). Then that something is true in all cases.
Such a proof would amount to establishing:
[P(1) ∧∀n (P(n) → P(n + 1 ))] →∀nP(n) which is a proof that shows that:
if it is possible to show that philosophical thoughts expressed in the English language are cultural philosophy, and that for any unspecified language n, if you can show that philosophy expressed in that language is cultural philosophy, then you can also show that the n + 1th philosophy you reach will also be cultural philosophy.
Is P(1), the base case, true? Is it the case that philosophizing in the English language will always be about the “collective” and “universal” manifestations of human intellectual achievements of the “grouping” of people called the English— that nation and ethnic group native to England? (Note, of course, that the base case need not be the English language. The beauty of abductive generalization here is that any natural language can be taken to be the base case. Note further that the cultural identity of the base need not be the English of England. If the language chosen were “American English,” then the ethnic/ cultural group in question would be the English-speaking Americans of the United States.)
Talking about the world in any language relies upon “sortals.” Sortals provide the criteria of individuation (“how many?”) and the principles of identity (“is it the same?”) in a language. If I ask the question “how many?” there is no intelligible way to answer that question until I specify how many of what should be counted. Hence, the answer to the question “how many?” can only be answered if a language has principles and criteria for the individuation of the sorts of “countable things” in that natural language. Criteria of individuation and the principles of identity are embedded into each language as sortals. Differently put, sortals code individuation and identity in natural languages.
In the English language, the criteria (and principles) of individuation and identity are spatiotemporal in the sense that particulars have identities because they are individuated sections of matter that are located in particular spaces, and that exist across time with designated identities. Sortals, in the English language, must have spatiotemporal location; they have to be space-filling and enduring over time.
It is “natural,” but erroneous, to assume that spatiotemporality is the only correct way of individuation and identity. This method of doing sortals seems natural only to speakers of European languages such as English. Moreover, it is certainly possible for speakers of non-European languages to falsely assume spatiotemporality as the only valid means of doing sortals because of the hegemony of European languages in philosophy, linguistics, psychology, and other such disciplines.
Contrast Yorùba,́ for example, with the English language. If I point at three different items and ask of each one in English “what is this,” the answers “It is water,” or “It is money,” or “It is a head” rely on criteria of individuation and identity that are spatiotemporal. A somewhat equivalent question in the Yorùba ́ language would be the question: “ki ́ niỳ i ?́ ” Helen Verran (2001, 2007) provides novel analysis of questions of this type. Verran’s analysis demonstrates that if I point at “water,” “money,” or “a head” and ask a monolingual or a competent bilingual speaker of the Yorùbá language “ki ́ nìyí´?”, the answers to these questions in Yorùba ́ would be: “Omi ni ó jẹ,́ ” “owo ́ ni ó jẹ,́ ” and “orí ni ó jẹ.́” It would however, be misleading to translate:
a. “Omi ni ó jẹ́” as “It is water”
b. “Owó ni ó jẹ́” as “It is money,” and
c. “Orí ni ó jẹ́” as “It is a head.”
This is because a competent Yorùbá speaker does not primarily identify and individuate on the basis of spatiotemporality. Rather, they identify and individuate on the sorts, categories or types of features that exist in common in a conceptualized, non-spatiotemporal metaphysical unity. Hence, the better translations would be:
d. “Omi ni ó jẹ́” as “watermatter manifests”
e. “Owó ni ó jẹ́” as “moneymatter manifests,” and
f. “Orí ni ó jẹ́” as “headmatter manifests.”
These may sound totally unintelligible to an English speaker. In her analysis, Helen Verran focused on the answers to these questions. I will approach them from the point of the question “kí ni ỳ i ́i?” (“what is this?”) itself.
First, we need to be clear on two syntactical and semantic methods of the Yorùbá language.
a. In its arrangement of words and phrases to create well-formed sentences, Yorùbá language adopts the method of assimilation and elision.
b. In its logic of meanings, the Yorùbá language adopts the method of layering.
Here is an example of these two methods at work. Consider for instance the name Kọ́laṕ ọ̀ Abiḿ bọ́la.́ The sentence ki ́ ọlá pọ,̀ which means: “may honor be plentiful,” now becomes the name “Kọ́laṕ ọ.̀” The sentence a bi ́ mi bá ọla,́ which means: “in a setting where we were born with lots of honor” now becomes the name “Abiḿ bọ́la.́” (Note that it is “we” were born, not “you” were born. This is because Abiḿ bọ́lá in this context refers to the extended Abiḿ – bọ́la ́ family, and not just the individual named Kọ́laṕ ọ ̀ Abiḿ bọ́la.́ Hence, the mi in a bi ́ mi bá ọlá refers to an extended family of about 2,500 people, and not just to the individual named Kọ́laṕ ọ.̀)
The first layer of meaning for the name Kọ́lápọ̀ Abi ́mbọ́lá would be the following: “here is another contribution to honor in a lineage where honor is already plentiful.” This first layer of meaning is, however, too superficial; and, in fact, the English translation above is woefully misleading. To be sure, the word ọlá in my names is somewhat equivalent to the word “honor” in English; but in actuality ọlá in Yorùbá is an appearance (a particular or an instance) of a manifestation (or a universal) whose primordial real form is the metaphysical entity/power/force/logic that the Yorùbá call Eṣ̀ u.̀ This supernatural entity/power/force functions as the neutral “universal law” that cosmically wields the balance of good and evil. In Yorùbá metaphysics and logic, there is good, there is evil, and there is a third middle of perfect “neutrality” in-between them. What we have is a Yorùbá metaphysics and a corresponding intuitionistic/ fuzzy logic that violates classical logic’s law of excluded middle.
In Yorủbá logic, the statement “a proposition is true or its negation is true” is not necessarily a true statement. For, there is a third truth-value encoded into the language.
The true meanings of my names can only be deciphered by paying attention to the fact that Eṣ̀ u,̀ that third truth-status (neutral?) metaphysical entity/ power/force/logic is always present with Ifá priests and priestesses (watching, accompanying, supporting, testing, judging, and rewarding them) because they are the physicians, philosophers, counselors, doctors and historians of Yorùbá societies. In short, my name is as much an affirmation as a warning: it affirms that I am from a lineage of Ifá diviners and that if I follow the ethical virtues of iẁ ap̀ ẹ̀lẹ́ (as those before me in this lineage did), my path in life will be filled with ire (i.e., blessing); but if I deviate from a path of iẁ ap̀ ẹ̀lẹ ́ and good conduct, Èṣù is always there watching everything I do, and will surely act as required by cosmic law.
Assimilations, elisions, and layered meanings of the type illustrated with my names are all embedded in the question: “kí ni ỳ i ́i,” which is in fact the condensed version of the question: “kín ni ti iru ́ oni ́ eỳ i ?́ ” The word-for-word equivalents for this longer question are:
|What||manifesting or appearing||is||type||belongs to
With a series of Yorủbá assimilations, elisions and layering of meanings:
kín ni ti irú oni ́ eỳ i ́ becomes shortened to
kín ni ti irú eỳ i,́ which becomes shortened to
kín ni ti e ̀leý i ̀i,́ which becomes shortened to
kín ni e ̀leý i ̀i,́ which becomes shortened to
kín léyii ́ (or its equivalent shortened versions of kín niyii ́ or kí niyii ́).
(Note that any version of these alternatives can be validly used in Yorùbá
To convey the exact metaphysical and epistemological ideas intended by a competent speaker of Yorùbá into English, the honest translation of the question kí niyi ̀i ?́ should be: To what type of manifestation does this type of appearing belong? Or better still: To what type of universal does this type of particular belong?
To be clear: the manner in which individuation and identification work in the Yorùbá language is radically different from that of the English language.
When a native speaker of Yorùbá sees the object that an English speaker would regard as a spatiotemporal sortal, the Yorùbá speaker sees more; the Yorùbá speaker in fact sees the appearing of a manifestation! This explains why, in conversing with a native Yorùbá speaker, the question: “kí ni ỳ i ́i ”́ with respect to “water,” “money,” and “orí” elicits the following responses:
a. “Omi ni ó jẹ́” (watermatter manifests);
b. “Owó ni ó jẹ́” (moneymatter manifests); and
c. “Orí ni ó jẹ́” (headmatter manifests).
Translation from Yorùbá into English and vice versa is fun! You see and understand things differently by code-switching in and out of the two languages. But at the same time, it is perilous! From Kindergarten through the doctoral level, I was schooled in two radically different educational systems: the formal Western educational system and the apprenticeship-based Yorùbá indigenous knowledge system in which I was studying to be an Ifá diviner. The Ifá Corpus has 256 books, each of which has 800 poems, making a total of 204,800 poems. The shortest poem is four lines, and there are some that run into 30 pages when written down.
Even though we are dealing with two languages, there are in fact five main classes of linguistic competence to engage with: Native-level Yorùbá speakers who are monolingual;
Native-level speakers of English who are monolingual;
Native-level Yorùbá speakers who have native-level fluency in the English language;
Competent-level Yorùbá speakers who also have competent-level status in the English language; and
Native-level Yorùbá speakers who had rudimentary-level understanding of the English language.
(Note: there are other classes of linguistic competency. For instance: competent- level speakers of Yorùbá who have native-level status in English; Ifá diviners from Cuba who speak Cuban Yorùbá and Spanish; or Candomblé practitioners from Brazil who speak Brazilian Yorùbá and Portuguese.)
Imagine that I am functioning as a translator for two monolinguals—a native- level Yorùbá speaker and a native-level English speaker. If the Yorùbá speaker were to ask the question: ki ́ niỳ ii?́ (given that I understand his worldviews and the presuppositions of his question) the honest translation I should render to the English speaker should be: “to what type of manifestation does this appearing belong?” The English speaker would be bewildered at my translation. If the English speaker were to ask what is this? My honest translation (given her worldview and the presuppositions of her question) should be a Yorùbá statement approximating something like “what is the identity of the spatiotemporal matter located here?” No doubt the Yorùbá speaker would think that the English speaker (or the translator) has lost some marbles!
The implication of the foregoing is clear: doing philosophy in the English language will yield a completely different set of rules, principles and standards from doing philosophy in the Yorùbá language because these languages individuate and identify in radically different ways. The law of identity which states that “each thing is the same with itself and different from another” only appears to be intuitively valid in the English language because spatiotemporality is coded into English—a language that is the collective cultural manifestation of the intellectual achievements of the English people as exhibited in communal, individual, and nomological psychology. The primary logic of Yorùbá language is not classical; it is intuitionistic or sortal at base, with a secondary or supplementary layer of classical logic.
Effective communication in the places where I grew up (the campus of Ọbáfẹ́mi Awólọ́wọ̀ University, the city of Ilé-Ifẹ,̀ and the city of Ọỳ ọ)́ required complex but seamless code-switching in engaging with peoples with the five different Yoruba/English language-competency mixes.
Every truly bilingual speaker of the Yorùbá and English languages learns to code-switch seamlessly. The codes switched between depend on the language competency level of those one is conversing with. Many concepts, principles, actions, processes, rules, and methods simply do not make sense if one thinks in Yorùbá on the basis of the spatiotemporal classical logic that is encoded into the English language. Many concepts, principles, actions, processes, rules and methods simply do not make sense if one thinks in English on the basis of the intuitionistic, fuzzy or sortal logic that are encoded into the Yorùbá language.
I am now in a position to assert that the Base case P(1) is true with respect to the English language. The forgoing discussion on sortals and the spatiotemporal criteria of individuation and identity in the English language demonstrably shows that philosophizing in English requires reliance on the principles of classical logic that are culturally codified in the language of the English people.
I am now also in a position to assert that the abduction step P(n) → P(n+1) for all cases of n is proven. In proving the base case with respect to the English language, I have shown that the sortals of individuation and identity are essential and cultural. But if we take any other language n, sortals will also be required in that language and they will also be cultural. (And this I have also shown with another n that is not the English language; namely, the Yorùbá language.) Hence:
[P(1) ∧∀n (P(n) → P(n + 1 ))] →∀nP(n)
Less formally, this proof states that:
Suppose that the claim that “philosophy has the property of cultural philosophy” holds for the first n cases (in this article the first nth case has been shown to be the English language); then the property of philosophy as cultural philosophy holds in the n+1th case (i.e., any other language we choose after establishing that this property holds for the English language as the first nth case). Then the property of philosophy as cultural philosophy holds in all cases.
The only condition under which this abductive generalization would fail is that in which we philosophize without communicating in a natural human language.
Premise 2: Yorùbá Thought is Philosophy
Clearly, this premise is not a universal generalization! It does not claim that all Yorùbá thought ipso facto classifies as philosophy; rather, it claims that at least some does. I will illustrate this claim with examples.
Classical Yorùbá Thought as Philosophy
In the preface to Yorùbá Culture: A Philosophical Account, I make the following claims:
This is a book about Yorùbá thought and practices. It expounds a view about the nature, roles and functions of Yorùbá beliefs in contemporary societies. My position is that philosophical ideas implicit in the Òrìṣà religion form the basis of Yorùbá culture in West Africa, the Americas, and other parts of the world. The book is, therefore, not a catalogue of various cultural practices of Yorùbá peoples around the world. It is not an exposition of tastes in art, dance, etiquette, and other mores that are adopted by this particular social group. It is simply a theoretical account of the philosophical ideas that underlie the world-view of traditional Yorùbá societies.” (Abiḿ bọ́la,́ K. 2006, xv.)
Works of this type are “classical” because they seek to identify the underlying concepts, categories, and viewpoints that are embedded within, and have persisted in the exegesis of, Yorùbá thought and culture. Other examples of works of the classical type, would include Gbadegesin (1984), Makinde (1983), and Sodipo (1973).
Modern Yorùbá Thought as Philosophy
In his foreword to the American edition of Hallen and Sodipo’s Knowledge, Belief, and Witchcraft: Analytic Experiments in African Philosophy, W. V. O Quine writes:
This book is philosophical and linguistic, serving both interests. On the philosophical side it embodies the spirit of the philosophy of ordinary language, which flourished in England in the middle decades of this century; but the language concerned, Yoruba, is far from ordinary from an English point of view. The central epistemological themes of truth, belief, knowledge and evidence are explored through analytic study of the usage and connotation of the key terms: not these four words to be sure, but the accepted dictionary counterparts in Yoruba. [. . .] Hints of an alien philosophical orientation emerge [. . .] This could enrich one’s own attitude with a new perspective [. . .]. (Hallen and Sodipo 1997, xiii)
Works of this type I describe as “modern” because their primary focus is on intercultural analysis of the compare-and-contrast type. They are intercommunicative dialogues between Yorùbá and other cultures. Other works within this genre would include Gbadegesin (1991, 1987), Taiwo (2004), and Verran (2001).
Non-Philosophical Sources of Yorùbá Thought as Philosophy
A wealth of writings from the fields of religion, literature, sociology, anthropology, etc. have also produced Yorùbá philosophical materials. In fact, in the 1970s and early 1980s when many academic philosophers were still bogged down with the question of whether there is an African philosophy (perhaps because they were thinking about African thought in European languages), scholars in these other fields just went on with the business of doing African philosophy in general, and Yorùbá philosophy in particular. Works within this genre include W. Abiḿ bọ́lá (1977, 1973, 1968), Abiọ́ ́duń (2014), Oyewumi (1997), and Soyinka (1976).
Conclusion: Yoruba thought is Cultural Philosophy
Given the truth of premises 1 and 2, we can conclude that Yorùbá thought
is cultural philosophy.
Implications of the Syllogism for African Philosophy
Ian Hacking rightly observed that “language matters to philosophy in the way it matters to all extended thought: we express and communicate our ideas in language” (Hacking 1975, 4). Hacking continued: “We shall avoid confusion if only we attend closely enough to distinctions actually present in common speech” (Hacking 1975, 6).
Prior to the hegemony of philosophy in academia, the primary source of philosophy in African societies were those specialists (so-called “illiterates” and “uneducated”) of second-order thinking who thought, critiqued, and conversed in their indigenous African languages (see W. Abiḿ bọ́la ́ , Oruka , Hallen and Sodipo , and Griaule  for analysis and illustrations of non-professional, non-academic-based African philosophy).
Philosophy is now burgeoning across Africa as an academic discipline. Yet, notwithstanding the contemporary growth and success of philosophy on the African continent, not one single academic program across the continent is conducted in an indigenous language. The languages of professional academic philosophical training, philosophical education, and philosophical writing in Africa are all European and Arabic.
To be sure, many African scholars have very poignantly argued that the language of education does matter. June 2015 marks 35 years since the Ghanaian philosopher Kwasi Wiredu called for the decolonization of African philosophy from “the conceptual frameworks embedded in the foreign philosophical traditions that have had an impact on African life and thought” (Wiredu 1996, 136). Scholars of the so-called “illiterate” type (listed above) have also written extensively on why the language of education, philosophizing, politics, art, and culture matter in Africa. Notable amongst these writings are Abiodun (2014), Oyewumi (1997), Wiredu (1996), and Wa Thiong’o (1994).
Many concepts, such as truth, reality, being, matter, existence, personhood, democracy, citizenship, soul, minds, etc., are still being conceptualized in colonized European languages in the doing of philosophy in Africa. Indeed, there are some African universities where indigenous languages are being taught in European languages!
To be sure, comparative analysis, second-order presentations of African thought systems in non-African languages, and the learning of more than one language are of immense value. However, these should not be at the demise of the logics, metaphysics and epistemologies that are embedded within the indigenous languages that are used routinely on a daily basis across the African continent.
Wiredu’s call for the conceptual decolonization of African philosophy has not yet been heeded, and as such professional academic philosophy in Africahas found itself in a precarious and paradoxical position: the development of philosophy in Africa is leading to the demise of African philosophy!
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