In the first place, Descartes stands for the most explicit and uncompromising dualism between mind and matter.
James Mark BaldwinLike all science, psychology is knowledge; and like science again, it is knowledge of a definite thing, the mind.
James Mark BaldwinPythagoras took the next important step by subordinating the mere matter of nature to its essential principle of form and order, identifying the latter with reason or the soul.
James Mark Baldwin