The most profound discoveries often come from asking the simplest questions.

The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants.

每一个数学问题都是一个等待解决的谜题，每一个解答都是向理解现实结构迈进的一步。

Each time you reach out to people， bring them a blessing； then they’ll be happy to see you when you bring them a problem.

一个人与他想要的生活之间唯一的障碍往往只是尝试的意愿和相信它可能的信念。