Investigations into the Origin of Language and Consciousness

Tran Duc Thao, a wise and learned scientist and an eminent Marxist philoso­ pher, begins this treatise on the origins of language and consciousness with a question: "One of the principal difficulties of the problem of the origin of consciousness is the exact determination of its beginnings. Precisely where must one draw the line between the sensori-motor psychism of animals and the conscious psych...