A Russian cosmonaut and a Russian brain surgeon were once discussing Christianity. The brain surgeon was a Christian, but the cosmonaut wasn’t. ‘I have been in outer space many times,’ bragged the cosmonaut, ‘but I have never seen any angels.’ The brain surgeon stared in amazement, but then he said, ‘And I have operated on many intelligent brains, but I have never seen a single thought.

Acting responsibly is not a matter of strengthening our reason but of deepening our feelings for the welfare of others.

The rearing of children is considered too important to be left to the individual and should be the responsibility of the state.

If an overgrown child draws something on a piece of paper, you can't ask the paper what the drawing is supposed to represent.

Dear Hilde, if the human brain was simple enough for us to understand, we would still be so stupid that we couldn't understand it. Love, Dad.

(As human beings) We see everything everything in a glass, darkly. Sometimes we can peer through the glass and catch a glimpse of what is on the other side. If we were to polish the glass clean, we'd see much more. But then we would no longer see ourselves.

Only philosophers embark on this perilous expedition to the outermost reaches of language and existence. Some of them fall off, but others cling on desperately and yell at the people nestling deep in the snug softness, stuffing themselves with delicious food and drink. 'Ladies and Gentlemen,' they yell, 'we are floating in space!' But none of the people down there care.