All earthly existence must ultimately be contained in a book.

However difficult life may seem, there is always something you can do, and succeed at. It matter that you don’t just give up.

Success is not about how much money you make, it's about the difference you make in people's lives.

未来属于那些相信自己梦想之美的人。

计算复杂性的美在于它能够揭示问题的固有难度，而不管用于解决这些问题的具体算法是什么。