"The world is a brutal place. My books reflect that."

奇迹每天都在发生。

你知道得越多，就越意识到自己知道得多么少。

The teacher who is indeed wise does not bid you to enter the house of his wisdom but rather leads you to the threshold of your own mind.

Interest is the first and most important ingredient in the recipe for grit.

In mathematics, the art of proposing a question must be held of higher value than solving it.

自然是一个活生生的整体，而不是一个死的集合体。

道德的营养不良和精神的中毒对人的心灵的危害，正如身体的营养不良对于身体健康的危害一样。