We possess art lest we perish of the truth.

Become who you are. Make what only you can make.

Towards gnats and fleas we should show no pity. We would do right to hang petty thieves, petty calumniators, and slanderers.

Mathematics would certainly have not come into existence if one had known from the beginning that there was in nature no exactly straight line, no actual circle, no absolute magnitude.

The heart and hand of those who always mete out become callous from always meting out.

And as long as you are in any way ashamed before yourself, you do not yet belong with us.

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.