“You're always believing ahead of your evidence. What was the evidence I could write a poem? I just believed it. The most creative thing in us is to believe in a thing.”

“That's what I want, a mental evidence I can feel. I don't want physical evidence, proof you have to go out and drag in. I want evidence that you can carry in your mind and always touch and smell and feel. But there's no way to do that. In order to believe in a thing you've got to carry it with you. You can't carry the Earth, or a man, in your pocket. I want a way to do that, carry things with me always, so I can believe in them. How clumsy to have to go to all the trouble of going out and bringing in something terribly physical to prove something. I hate physical things because they can be left behind and become impossible to believe in them.”

“I believe in evidence. I believe in observation, measurement, and reasoning, confirmed by independent observers. I'll believe anything, no matter how wild and ridiculous, if there is evidence for it. The wilder and more ridiculous something is, however, the firmer and more solid the evidence will have to be.”

“I have always believed that hope is that stubborn thing inside us that insists, despite all the evidence to the contrary, that something better awaits us so long as we have the courage to keep reaching, to keep working, to keep fighting.”

“I believe that the most important single thing, beyond discipline and creativity is daring to dare.”

“Hope is believing in spite of the evidence, and then watching the evidence change.”