The truth is often a terrible weapon of aggression. It is possible to lie, and even to murder, with the truth.

My difficulties belong to me!

Every therapeutic cure, and still more, any awkward attempt to show the patient the truth, tears him from the cradle of his freedom from responsibility and must therefore reckon with the most vehement resistance.

The science of the mind can only have for its proper goal the understanding of human nature by every human being, and through its use, brings peace to every human soul.

Mathematics is pure language - the language of science. It is unique among languages in its ability to provide precise expression for every thought or concept that can be formulated in its terms.

It is well known that those who do not trust themselves never trust others.

Every pampered child becomes a hated child.... There is no greater evil than the pampering of children.