One should forgive one's enemies, but not before they are hanged.

Logic is the mirror of thought.

In individuals， insanity is rare；but in groups， parties， nations， and epochs， it is the rule.

解释：不可以不知道活着的乐趣，也不可以不知道虚度光阴的担忧。

我们必须通过文学来理解我们的历史。