"I am the only guinea pig I have."

"I think I am a verb."

"Sometimes I think we're alone. Sometimes I think we're not. In either case, the thought is staggering."

"Nature is trying very hard to make us succeed, but nature does not depend on us. We are not the only experiment."

"When I'm working on a problem, I never think about beauty. I think only how to solve the problem. But when I have finished, if the solution is not beautiful, I know it is wrong."

"Humanity is acquiring all the right technology for all the wrong reasons."

"My husband and I are either going to buy a dog or have a child. We can't decide whether to ruin our carpet or ruin our lives."

"The work an unknown good man has done is like a vein of water flowing hidden underground, secretly making the ground green."

"The poet only asks to get his head into the heavens. It is the logician who seeks to get the heavens into his head. And it is his head that splits."

"Most people are bothered by those passages of Scripture they do not understand, but the passages that bother me are those I do understand."

"...a man may be a patriot without risking his own life or sacrificing his health. There are plenty of lives less valuable."

"No doubt alcohol, tobacco, and so forth, are things that a saint must avoid, but sainthood is a thing that human beings must avoid."