数学不仅仅是关于数字、方程、计算或算法：它是关于理解的。

I don't think I'm a bad person. I just have a bad lifestyle.

When you look long into an abyss, the abyss looks into you.

If you’re not making someone angry, you’re not doing it right.

Truth, like gold, is to be obtained not by its growth, but by washing away from it all that is not gold.

The simplicity of nature is not to be measured by our conceptions of simplicity.

In all things — except love — start with the exit strategy. Prepare for the ending. Almost anything is easier to get into than out of.