To be human means to feel inferior.

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.

Everything can always be different!

Tears and complaints - the means which I have called water power - can be an extremely useful weapon for disturbing cooperation and reducing other to a condition of slavery.

To be a human being means to possess a feeling of inferiority which constantly presses towards its own conquest. The greater the feeling of inferiority that has been experienced, the more powerful is the urge for conquest and the more violent the emotional agitation.

Every neurotic is partly in the right.

We must never neglect the patient's own use of his symptoms.