The more you learn, the more you know. The more you know, the more you forget. The more you forget, the less you know. So why bother to learn?

预测未来的最好方式就是创造未来。

Lock up your libraries if you like; but there is no gate, no lock, no bolt that you can set upon the freedom of my mind.

从n对观测值的样本中获得的相关系数的可能误差是sqrt((1-r²)/(n-2))。

我不害怕跌倒，因为我知道我会再次站起来。

我不需要理由去爱，我就是爱。