In mathematics, as in life, the most elegant solutions often arise from a deep understanding of the problem.

身边的人都不能亲近,就不要希望招徕远方的人。

A statement is a means to convey information， a promise is a means to make a commitment.

One must not lose desires. They are mighty stimulants to creativeness, to love, and to long life.

努力工作和诚信是任何持久企业的基石。