种树的最佳时间是20年前，第二好的时间是现在。

概率既由我们观察的性质决定，也由我们的理性观念决定。

Because thought implies judgement, and because we are all paranoid enough to take judgement to be negative, it is constitutionally suspect in the bedroom.

仇恨只会毁灭仇恨者。