In the animal kingdom, the rule is, eat or be eaten; in the human kingdom, define or be defined. - Thomas Szasz

Like the devout theologian seeing the Devil lurking everywhere, Menninger, the devout Freudian, sees aggression.

So long as men denounce each other as mentally sick (homosexual, addicted, insane, and so forth)—so that the madman can always be considered the Other, never the Self—mental illness will remain an easily exploitable concept, and Coercive Psychiatry a flourishing institution.

In the natural sciences, language (mathematics) is a useful tool: like the microscope or telescope, it enables us to see what is otherwise invisible. In the social sciences, language (literalized metaphor) is an impediment: like a distorting mirror, it prevents us from seeing the obvious. That is why in the natural sciences, knowledge can be gained only with the mastery of their special languages; whereas in human affairs, knowledge can be gained only by rejecting the pretentious jargons of the social sciences.