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"To live is the rarest thing in the world. Most people exist, that is all."

成功不是終點(diǎn)，失敗也不是致命的，重要的是繼續(xù)前進(jìn)的勇氣。

To teach mathematics is to inspire the next generation of thinkers and problem solvers.

The ideas of economists and political philosophers， both when they are right and when they are wrong， are more powerful than is commonly understood. Indeed the world is ruled by little else. Practical men， who believe themselves to be quite exempt from any intellectual influence， are usually the slaves of some defunct economist.

You can‘t reason someone out of a notion that they didn’t reason themselves into.?