Abstract

One can agree with the critics of the Aristotelian theory of essences who say that the determination of the essence of a thing rests upon a linguistic decision, without accepting the conclusion that "a controversy as to whether rationality is of the essence of man is ultimately verbal." For linguistic decisions, that is, the acceptance of a classificatory scheme together with its associated system of definitions, may be motivated and justified by our knowledge of facts or our appreciation of values. If, say, a Freudian and an Aristotelian were disputing the adequacy of defining man as a rational animal, the former might reject the definition on the grounds that the conscious intellect plays less of a causal role in human decisions and thinking than was once believed, whereas the latter might claim that reason ought to play a greater role if the good life be possible. Conflicts over definitions reflect theoretical and ethical differences. Once these differences are reconciled, the verbal conflict is no longer important. But the easing of the verbal conflict is not solely a verbal affair. It presupposes a harmonious adjustment of values and beliefs. The function of a philosophy of human nature is to formulate and discuss a definition of man which proposes certain human attributes as essential and which is to be justified to the extent that it best summarizes those features of human life which are of greatest causal and ethical significance. It is to be expected that, in order for a satisfactory definition to be reached, any number of philosophical problems would have to be dealt with along the way. A philosophy of man is a judgment about what is important in human affairs, but it is not for that reason arbitrary unless one is convinced that value judgments are arbitrary, that one cannot provide reasons, good or bad, for them. When, in the context of ethics, Aristotle cites the rational faculty rather than the capacity to laugh as the function of man, he was stressing that reason has greater importance than a sense of humor in moral deliberation. And when Marx, in his Theses on Feuerbach, claims: "The human essence is no abstraction inherent in each single individual. In its reality it is the ensemble of social relations," he was indicating that in order to understand why men act and think the way they do it is necessary to understand the society in which they live.