Genteel women suppose that those things do not really exist about which it is impossible to talk in polite company.

Either one does not dream, or one does so interestingly. One should learn to spend one's waking life in the same way: not at all, or interestingly.

Whereas the man of action binds his life to reason and its concepts so that he will not be swept away and lost, the scientific investigator builds his hut right next to the tower of science so that he will be able to work on it and to find shelter for himself beneath those bulwarks which presently exist.

[Heraclitus speaks as if] in entrancement ... but [also] truthfully.

Men who think deeply appear to be comedians in their dealings with others because they always have to feign superficiality in order to be understood.

So long as the spectator has to figure out the meaning of this or that person, or the presuppositions of this or that conflict of inclinations and purposes, he cannot become completely absorbed in the activities and sufferings of the chief characters or feel breathless pity and fear.

Be careful when you fight the monsters, lest you become one.