Optimism doesn't wait on facts. It deals with prospects. Pessimism is a waste of time.

The individual is capable of both great compassion and great indifference. He has it within his means to nourish the former and outgrow the latter.

All things are possible, once enough human beings realize that everything is at stake.

We are wide-eyed in contemplating the possibility that life may exist elsewhere in the universe, but we wear blinders when contemplating the possibilities of life on earth.

The way a book is read, which is to say, the qualities a reader brings to a book can have as much to do with its worth as anything the author puts into it.

Don't defy the diagnosis, try to defy the verdict.

He who keeps his cool best wins.