Power is not something that can be learned in a day. It is a process, a strategic game that requires constant attention and adaptation.
你无法改变过去，但可以塑造未来。
The world is a mirror, and we see in it what we are.
Never underestimate the power of a simple idea executed well.
数学推理可以相当系统地看作是对两种能力的结合运用，我们可以称之为直觉和独创性。