有时候生活中最难的事情是知道该跨过哪座桥，该烧掉哪座桥。

Celebrate your successes. Find some humor in your failures. Don't take yourself so seriously. Loosen up, and everyone around you will loosen up. Have fun. Show enthusiasm. Always.

Come,my friends,Tis not too late to seek a newer world,For my purpose holds to sail beyond the sunset，And though we are not now that strength which in old days moved earth and heaven,That which we are, we are;-- One equal temper of heroic hearts, Made weak by time and fate, but strong in will. To strive, to seek, to find, and not to yield。

数学的本质不是使简单的事情复杂化，而是使复杂的事情简单化。

The main task in life is simply this: to identify and separate matters so that I can say clearly to myself which are externals not under my control, and which have to do with the choices I actually control.