禁欲主义原则从来没有被任何生物一贯坚持过，也永远不会被如此坚持。

心理学家必须避免一切形式的心理化学。

Part of what you must learn is how to handle mistakes and new facts that change the odds.Life, in part, is like a poker game wherein you have to learn to quit sometimes when holding a much-loved hand.

我不是政治家，我只是一个关心的公民。

To solve complex problems, we must first understand the systems that create them.

I think the best moments in my career are the ones where I'm just completely surprised by something.