“Religion as madness is a madness springing from irreligiousness.”

“If you and I are to live religious lives, it mustn't be that we talk a lot about religion, but that our manner of life is different. It is my belief that only if you try to be helpful to other people will you in the end find your way to God.”

“I think one of the things you and I have to learn is that we have to live without the consolation of belonging to a Church....Of one thing I am certain. The religion of the future will have to be extremely ascetic, and by that I don't mean just going without food and drink.”

“The world of the happy man is a different one from that of the unhappy man.”

“Always come down from the barren heights of cleverness into the green valleys of folly.”

“It is not humanly possible to gather immediately from it what the logic of language is. Language disguises thought.”

“Language disguises the thought; so that from the external form of the clothes one cannot infer the form of the thought they clothe, because the external form of the clothes is constructed with quite another object than to let the form of the body be recognized.”