最深刻的定理往往有最简单的证明 - 如果你从正确的角度看它们的话。
The deepest theorems often have the simplest proofs - if you look at them from the right angle.
In the pursuit of mathematical truth, we often find more questions than answers.
Swim upstream. Go the other way. Ignore the conventional wisdom. If everybody else is doing it one way, there's a good chance you can find your niche by going in exactly the opposite direction.