The real competition is not between companies, but with yourself.

You cannot always control what goes on outside. But you can always control what goes on inside.

These walls are very interesting. When you first went to jail, you hated the high walls, and slowly, you get used to it. This is called institutionalization.

数学的真正力量不在于它的复杂性，而在于它的简洁和优雅。

最好的建筑来自于良好的关系。