If someone does something we disapprove of, we regard him as bad if we believe we can deter him from persisting in his conduct, but we regard him as mad if we believe we cannot.
Thomas SzaszClassifying thoughts, feelings and behaviors as diseases is a logical and semantic error, like classifying whale as fish.
Thomas SzaszNo further evidence is needed to show that 'mental illness' is not the name of a biological condition whose nature awaits to be elucidated, but is the name of a concept whose purpose is to obscure the obvious.
Thomas Szasz