[Is there still a soul? Thomas Aquinas and modern psychiatry]

The various solutions that have been proposed with respect to the body-mind problem can be more or less regarded as variations on three traditional models. Since the time of Descartes the philosophical position of hylomorphism has been almost forgotten and the influence of the dualist point of view has also been greatly reduced. In contrast, reductionism in the form of materialistic monism has gained immense popularity, especially in psychiatric circles. The present paper summarizes these different approaches but primarily focuses on certain aspects of a modified form of hylomorphism as developed by Thomas Aquinas. These latter considerations are then drawn upon as the basis for a critique of Kurt Schneiders so-called aristotelean-scholastic or metagenic interpretation with regard to the endogenous psychoses.