From a hundred rabbits you can't make a horse.

Man, do not pride yourself on your superiority to the animals, for they are without sin, while you, with all your greatness, you defile the earth wherever you appear and leave an ignoble trail behind you -- and that is true, alas, for almost every one of us!

Thus, as a result of heightened consciousness, a man feels as if it's all right if he's bad as long as he knows it- as though that were any consolation.

When he has lost all hope, all object in life, man becomes a monster in his misery.

To strive consciously for an object and to engage in engineering -- that is, incessantly and eternally to make new roads, wherever they may lead.

Here is a commandment for you: seek happiness in sorrow. Work, work tirelessly.

I will not and cannot believe that evil is the normal condition of mankind.