Success is not about luck; it's about hard work and determination.

My voice was my weapon, my shield, and my sanctuary.

A proof is a device for convincing someone else that a mathematical statement is true.

我不是一个完美的人，我从来没有声称过。但我每天都在努力变得比昨天更好。

It’s not just what you say that stirs people. It’s the way that you say it.

Trade between two countries can be mutually beneficial, even if one of them is less efficient in the production of all commodities.