Neurosis is the result of a conflict between the ego and its id, whereas psychosis is the analogous outcome of a similar disturbance in the relation between the ego and the external world.
Sigmund FreudWhat progress we are making. In the Middle Ages they would have burned me. Now they are content with burning my books.
Sigmund FreudCivilized society is perpetually menaced with disintegration through this primary hostility of men towards one another.
Sigmund FreudWe may say that hysteria is a caricature of an artistic creation, a compulsion neurosis a caricature of a religion, and a paranoiac delusion a caricature of a philosophic system.
Sigmund Freud