不确定性不能成为不作为的借口。

一本书是通往其他生活和其他世界的窗口。

一个理论最重要的在于其预测的有效性，而非其美学吸引力。

我不会坐在这里说我是个榜样，因为我并没有试图成为榜样。

Our heroes are human heroes. That's a very new situation. Most other societies have had, right at their center, the worship of something transcendent: a god, a spirit, a natural force, the universe, whatever it is -- something else that is being worshiped. We've slightly lost the habit of doing that, which is, I think, why we're particularly drawn to nature.