Faith is synonymous with working hypothesis.

We may be in the Universe as dogs and cats are in our libraries, seeing the books and hearing the conversation, but having no inkling of the meaning of it all.

A chain is no stronger than its weakest link, and life is after all a chain.

It is your friends who make your world.

The prescription is that the subject must be made to show new aspects of itself; to prompt new questions; in a word, to change. From an unchanging subject the attention inevitably wanders away.

It does not follow, because our ancestors made so many errors of fact and mixed them with their religion, that we should therefore leave off being religious at all. By being religious we establish ourselves in possession of ultimate reality at the only points at which reality is given us to guard. Our responsible concern is with our private destiny, after all.

So it is with children who learn to read fluently and well: They begin to take flight into whole new worlds as effortlessly as young birds take to the sky.