Mathematical reasoning may be regarded rather schematically as the exercise of a combination of two facilities, which we may call intuition and ingenuity.
数学推理可以相当系统地看作是对两种能力的结合运用，我们可以称之为直觉和独创性。
In mathematics, the art of proposing a question must be held of higher value than solving it.
It really matters whether people are working on generating clean energy or improving transportation or making the Internet work better and all those things. And small groups of people can have a really huge impact.
The materials I use are witnesses of time.
We should cultivate indifference to everything.
什么是离婚的主要原因？结婚。
The trick is not to learn to trust your gut feelings, but rather to discipline yourself to ignore them.