Appeared in Fall 1993, Vol. XIX, No. 2, 3

The purpose of this article is to enquire whether, in the face of evidence gained from recent ape-language studies, it is still possible to delineate clearly between human intellectual life and brute sentient life – to refute the claims of the sensist philosophers who would reduce all human knowledge and activities to the level of mere sensation and sense appetite. This question cannot, and need not, be answered exhaustively in this relatively short study of the matter. In order to respond in the affirmative, it will suffice that we be able to show that even the most sophisticated sensory activities of animals bear no legitimate threat to the radical superiority of the human intellect – an intellect whose spiritual character is rationally demonstrable.

Nor is it our intent to present here the formal proofs for the spiritual nature of the human soul which have been offered by St. Thomas Aquinas and others.1 Rather, our primary focus will be upon an examination of evidence and arguments which reveal the inability of lower animals to present a credible challenge to the uniqueness of human intellectual life.

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