Mathematics is a logical method. . . . Mathematical propositions express no thoughts. In life it is never a mathematical proposition which we need, but we use mathematical propositions only in order to infer from propositions which do not belong to mathematics to others which equally do not belong to mathematics.

For life in the present there is no death. Death is not an event in life. It is not a fact in the world.

For a truly religious man nothing is tragic.

Always get rid of theory private object in this way: assume that it constantly changes, but that you do not notice the change because your memory constantly deceives you.

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.

[M]an is fulfilling the purpose of existence who no longer needs to have any purpose except to live. That is to say, who is content.

How small a thought it takes to fill a life.