An idea that is not dangerous is unworthy of being called an idea at all.

All great ideas are dangerous.

Any preoccupation with ideas of what is right or wrong in conduct shows an arrested intellectual development

Every impulse we strangle will only poison us.

The mark of all good art is not that the thing done is done exactly or finely, for machinery may do as much, but that it is worked out with the head and the workman's heart.

You will always be fond of me. I represent to you all the sins you have never had the courage to commit.