"Suppose someone were a believer and said: 'I believe in a Last Judgement,' and I said: 'Well, I'm not so sure. Possibly.' You would say that there is something wrong here, even if we both believe the same things about physics."
"Whereof one cannot speak, thereof one must be silent."
"The limits of my language mean the limits of my world."
"A picture held us captive. And we could not get outside it, for it lay in our language and language seemed to repeat it to us inexorably."
"If you wish to leave a track in the history of the world, you must pay with your soul."