Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
数学不是关于数字、方程、计算或算法：它是关于理解的。
Should you find yourself contorting to fit a system, dear reader, stop and ask if it's truly you that must change or the system.
Life is a slope.As long as you're going up you're always looking towards the top and you feel happy, but when you reach it, suddenly you can see the road going downhill and death at the end of it all. It's slow going up and quick going down.
预测未来的最好方法就是创造未来。
It is not what we believe, but why we believe it; moral responsibility begins there.