The author discusses the reasons for the aversion of medical men to

the discussion of psychological concepts of disease. He points to the experimental evidence for the existence of physiological mechanisms by which psychological activity may result in organic damage, and he adds psychological and empirical evidence. He reiterates that there can be no such thing as a psychogenic illness, but equally there can be no such thing as a physiogenic or chemogenic or bacteriogenic illness. He sees the human being and his environment as a totality of interacting functions.