"There are two occasions when the sacred beauty of Creation becomes dazzlingly apparent, and they occur together. One is when we feel our mortal insufficiency to the world, and the other is when we feel the world's mortal insufficiency to us."

The study of psychology is the study of life's problem-solving mechanisms.

文明被描述为对一系列挑战的回应结果，而其中最大的挑战始终是气候。

传记的挑战不在于发现事实 - 而在于发现事实背后的意义。