我们都知道，儿童发展的时期是一生最重要的时期。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。所以，儿童教育是人类展重要的一个问题。

Mathematics is not a deductive science—that's a cliché. When you try to prove a theorem, you don't just list the hypotheses and then start to reason. What you do is trial and error, experimentation, guesswork.

Man is always something more than what he knows about himself. He is not what he is simply once and for all, but is a process.

最好的艺术是不解释自己的艺术。

The best way to predict the future is to create it.

作家必须是个人对抗集体的捍卫者。