Freedom is independence of the compulsory will of another.

If man makes himself a worm he must not complain when he is trodden on.

He who is cruel to animals becomes hard also in his dealings with men. We can judge the heart of a man by his treatment of animals.

I had therefore to remove knowledge, in order to make room for belief.

From such crooked wood as that which man is made of, nothing straight can be fashioned.