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What's terrible is to pretend that second-rate is first-rate. To pretend that you don't need love when you do; or you like your work when you know quite well you're capable of better.

在觀察的領域里，機遇只偏愛那種有準備的頭腦。

數學不是關于數字、方程、計算或算法的：它是關于理解的。