You have set up in New York Harbor a monstrous idol which you call Liberty. The only thing that remains to complete that monument is to put on its pedestal the inscription written by Dante on the gate of hell: All hope abandon ye who enter here.

Great art is never produced for its own sake. It is too difficult to be worth the effort.

The happiness of credulity is a cheap and dangerous quality.

I never thought much of the courage of a lion tamer. Inside the cage he is at least safe from people.

You may well ask me why...I took the time to write [books]. I can only reply that I do not know. There was no why about it. I had to: that was all.

Even if animal experimentation was proved to be of value, it would be morally wrong.

If I bind the future I bind my will. If I bind my will I strangle creation.