Quality is not an act, it is a habit.

You don't learn to walk by following rules. You learn by doing, and by falling over.

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。

Most people do not listen with the intent to understand; they listen with the intent to reply.

数学是一种思维方式，而不仅仅是一堆事实。

在数学中，真理不是通过共识而是通过证明来发现的。

The first duty of a revolutionary is to be educated.

The history of life is a history of adaptation.

发现可能性的极限的唯一方法就是超越它们进入不可能。