If you're not stubborn, you'll give up on experiments too soon. And if you're not flexible, you'll pound your head against the wall and you won't see a different solution to a problem you're trying to solve.
失败不是必要的恶。事实上,它根本不是恶。它是做新事物的必然结果。
学习的最佳方式是教授。
The conjectures of the Langlands program are not merely problems to be solved but a vision of how mathematics should be.