你不能害怕失败，这是成功的唯一途径。

Democracy is a device that ensures we shall be governed no better than we deserve.

Happiness is not something ready made. It comes from your own actions.

数学证明的优雅在于其简洁和清晰。

炽烈的恨意可以给空虚的生活带来意义和目的。