Courtesy costs nothing.

　　礼多人不怪。

　　Custom makes all things easy.

　　习惯成自然。

　　Desire has no rest.

　　人的欲望无止境。

　　Difficult the first time, easy the second.

　　一回生，二回熟。

　　The tragedy of the world is that those who are imaginative have but slight experience, and those who are experienced have feeble imagination.

　　世界的悲剧就在于有想象力的人缺乏经验，而有经验的人缺乏想象力。

　　The way to win an atomic war is to make certain it never starts.

　　赢得核战争的方法是确保它永远不会发生。

　　Experience is what you get when you don't get what you want.

　　经验是当你没得到想得到之物时所得到的东西。

　　If you don't learn to think when you are young, you may never learn.

　　如果你年轻时没有学会思考，那就永远学不会思考。

　　Treat other people as you hope they will treat you.

　　你希望别人如何对待你，你就如何对待别人。

　　Experience more than sufficiently teaches that men govern nothing with more difficult than their tongues.

　　经验给了我们太多的教训，告诉我们人类最难管制的东西，莫过于自己的舌头。