The unselective knowledge drive resembles the indiscriminate sexual drive--signs of vulgarity!

It is not when it is dangerous to tell the truth that its advocates are hardest to find, but when it is boring.

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.

We criticize a thinker more acutely when he advances a proposition that is disagreeable to us; and yet it would be more reasonableto do so when his proposition is agreeable to us.

We are most unfair to God; we do not allow Him to sin.

What separates two people most profoundly is a different sense and degree of cleanliness.

And we should consider every day lost on which we have not danced at least once. And we should call every truth false which was not accompanied by at least one laugh.