The value of a man can only be measured with regard to other men.

You should seek your enemy, you should wage your war - a war for your opinions. And when your opinion is defeatedy our honesty should still cry triumph over that!

Do I advise you to love the neighbor? I suggest rather to escape from the neighbor and to love those who are the farthest away from you. Higher than the love for the neighbor is the love for the man who is distant and has still to come.

The man who meets with a failure attributes this failure rather to the ill will of another than to fate.

The refinement of morality increases together with the refinement of fear. Today the fear of disagreeable feelings in other people is almost the strongest of our own disagreeable feelings.

In certain pious people I have found a hatred of reason, and have been favourably disposed to them for it: their bad intellectual conscience was at least exposed by that!

For a tree to become tall it must grow tough roots among the rocks.