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.

The pleasure of satisfying a savage instinct, undomesticated by the ego, is uncomparably much more intense than the one of satisfying a tamed instinct. The reason is becoming the enemy that prevents us from a lot of possibilities of pleasure.

Whoever loves becomes humble. Those who love have, so to speak, pawned a part of their narcissism.

We must not allow ourselves to be deflected by the feminists who are anxious to force us to regard the two sexes as completely equal in position and worth.

Religious illusion must bow to scientific truth. It is in total error about the nature of the true world. Only science is not an illusion.

Incidentally, why was it that none of all the pious ever discovered psycho-analysis? Why did it have to wait for a completely godless Jew?

Knowledge is the intellectual manipulation of carefully verified observations.