Our modern skulls house a Stone Age mind.

写作的行为是一种勇气的行为，是对生命短暂本质的挑战。

Freedom is not merely the opportunity to do as one pleases; neither is it merely the opportunity to choose between set alternatives. Freedom is, first of all, the chance to formulate the available choices, to argue over them - and then, the opportunity to choose.

The best revenge is massive success.

计算学习理论中的一个关键见解是，学习问题的复杂性由假设空间的复杂性和可用数据的数量决定。