The founders of a new colony, whatever Utopia of human virtue and happiness they might originally project, have invariably recognized it among their earliest practical necessities to allot a portion of the virgin soil as a cemetery, and another portion as the site of a prison.

土地不会骗人，你付出多少它就回报多少。

喜欢攻击别人的人，常危及自身，如果自己甘心当愚者，却能恰恰成就自保其身的智慧；喜好自我吹嘘的人，被众人取笑，自以为得计耍小聪明，却恰恰表现出他自欺欺人的愚昧。

没有一个明智的飞行员会忘记使用他的清单，无论他的才能和经验有多么出色。