Only a good-for-nothing is not interested in his past.

Indeed, the great Leonardo (da Vinci) remained like a child for the whole of his life in more than one way. It is said that all great men are bound to retain some infantile part. Even as an adult he continued to play, and this was another reason why he often appeared uncanny and incomprehensible to his contemporaries.

Religion: Something comparable to childhood neurosis

The interpretation of dreams is the royal road to a knowledge of the unconscious activities of the mind.

If the truth of religious doctrines is dependent on an inner experience that bears witness to the truth, what is one to make of the many people who do not have that experience?

Religion is an illusion and it derives its strength from the fact that it falls in with our instinctual desires.

Cigars served me for precisely fifty years as protection and a weapon in the combat of life... I owe to the cigar a great intensification of my capacity to work and a facilitation of my self-control.