Nature is the greatest teacher and I learn from her best when others are asleep.

"A good picture book is a silent conversation between the artist and the child."

我为什么要站到这儿，我站到讲台上，是想提醒我自己我们必须时刻用不同的眼光来看待事物。

Thinking is behavior. The muscular habits learned in overt speech are responsible for implicit or internal speech (thought).

Philosophy is a battle against the bewitchment of our intelligence by means of language.

科学中最重要的是不要停止提问。