There is nothing a person can't do, and there should be nothing a human being didn't care about. It was the most positive encouragement I could have hoped for.

The important thing is not to stop questioning. Curiosity has its own reason for existing. One cannot help but be in awe when one contemplates the mysteries of eternity, of life, of the marvelous structure of reality. It is enough if one tries to comprehend only a little of this mystery every day.

I lived in solitude in the country and noticed how the monotony of a quiet life stimulates the creative mind.

Parents who tell their offspring that sex is an act performed only for procreation do everyone a serious disservice.

My wish for you is that you continue. Continue to be who and how you are, to astonish a mean world with your acts of kindness. Continue to allow humor to lighten the burden of your tender heart.

Everyone who is seriously involved in the pursuit of science becomes convinced that some spirit is manifest in the laws of the universe, one that is vastly superior to that of man. In this way the pursuit of science leads to a religious feeling of a special sort, which is surely quite different from the religiosity of someone more naive.

Whenever I want to laugh, I read a wonderful book, 'Children's Letters to God.' You can open it anywhere. One I read recently said, 'Dear God, thank you for the baby brother, but what I prayed for was a puppy.'