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Train people well enough so they can leave, treat them well enough so they don't want to.
To understand the arithmetic of algebraic varieties is to understand the symmetries hidden within them.
预测未来的最好方法就是创造它。
你只活一次,但如果你做得对,一次就足够了。
"The most important thing in science is not so much to obtain new facts as to discover new ways of thinking about them."