Pay attention to your enemies, for they are the first to discover your mistakes.
［译］注意你的敌人，因为他们总是第一个发现你的错误。
People do not lack strength; they lack will.
［译］人们缺少的不是力量，而是勇气。
Politeness is like an air cushion. There may be nothing in it, but it eases our jolts wonderfully.
［译］礼貌就像一只气垫，里面可以什么也没有，却能奇妙地减轻颠簸。
Pull the chestnut out of fire.
［译］火中取栗。