可以依赖的激情是恐惧。
Every problem in mathematics is an opportunity to learn something new.
Doing the best at this moment puts you in the best place for the next moment.
我总是努力在生活中保持积极和乐观。
知识最大的敌人不是无知,而是知识的幻觉。
The greatest discovery is that human beings can alter their lives by altering the attitudes of their minds.