My day passes between logic, whistling, going for walks, and being depressed. I wish to God that I were more intelligent and everything would finally become clear to me - or else that I needn't live much longer.

Humor is not a mood but a way of looking at the world. So if it is correct to say that humor was stamped out in Nazi Germany, that does not mean that people were not in good spirits, or anything of that sort, but something much deeper and more important.

The so-called law of induction cannot possibly be a law of logic, since it is obviously a proposition with a sense.--Nor, therefore, can it be an a priori law.

Death is not an event in life: we do not live to experience death.

Belief in the causal nexus is superstition.

If a lion could talk, we could not understand him.

Genius is talent in which character makes itself heard.