If a jewel falls into the mire
it remains as precious as before;and though dust should ascend to heaven
its former worthlessness will not be altered.
宝石即使落在泥潭里，仍是一样可贵；尘土纵然扬到天上，还是没有价值。

If a man deceives me once, shame on him； if he deceives me twice, shame on me.
上当一回头，再多就可耻。

If a man empties his purse into his head
no man can take it away from him
an investment in knowledge always pays the best interest.
倾已所有追求知识，没有人能夺走它；向知识投资，收益最佳。

If there were less sympathy in the world,
there would be less trouble in the world.
如果世界上少一些同情，世界上也就会少一些麻烦。

If winter comes
can spring be far behind?
冬天来了，春天还会远吗？

If you do not learn to think when you are young,
you may never learn.
如果你年轻时不学会思考，那就永远不会。

If you doubt yourself
then indeed you stand on shaky11 ground.
如果你怀疑自己，那么你的立足点确实不稳固了。

If you make yourself an ass,
don’t complain if people ride you.
人善被人欺，马善被人骑。

If you run after two hares, you will catch neither.
脚踏两条船，必定落空。

If you sell the cow, you sell her milk too.
杀鸡取卵。

If you venture nothing, you will have nothing.
不入虎穴，焉得虎子。

If you want knowledge, you must toil for it.
要想求知，就得吃苦。

If you want to understand today
you have to search yesterday.
想要懂得今天，就必须研究昨天。

If you wish to succeed
you should use persistence as your good friend
experience as your reference
prudence as your brother and hope as your sentry.
如果你希望成功，当以恒心为良友、以经验为参谋、以谨慎为兄弟、以希望为哨兵。

If you would go up high then use your own legs!Do not let yourselves carried aloft;do not seat yourselves on other people’s backs and heads.
如果你想走到高处，就要使用自己的两条腿！不要让别人把你抬到高处；不要坐在别人的背上和头上。

If you would know the value of money
go and try to borrow some.
要想知道钱的价值，就想办法去借钱试试。

If your ears glow, someone is talking of you.
耳朵发烧，有人念叨。

If your Riches are yours
why don’t you take them with you to the other world?
如果财富是你的，那么你为什么不把它们和你一起带到另一个世界去呢？

Imagination is more important than knowledge.
想象力比知识更为重要。

In delay there lies no plenty
Then come kiss me
sweet and twenty
Youth’s a stuff that will not endure.
迁延蹉跎，来日无多，二十丽姝，请来吻我，衰草枯杨，青春易过。

In education we are striving not to teach youth to make a living but to make a life.
教育不是为了教会青年人谋生，而是教会他们创造生活。

Industry is the parent of success.
勤奋是成功之母。

It is at our mother’s knee that we acquire our noblest and truest and highest
but there is seldom any money in them.
就是在我们母亲的膝上，我们获得了我们的最高尚、最真诚和最远大的理想，但是里面很少有任何金钱。

It is better to die when life is a disgrace.
宁为玉碎，不为瓦全。

It is discouraging to think how many people are shocked by honesty and how few by deceit.
令人沮丧的是，有那么多人对诚实感到吃惊，而对欺骗感到吃惊的人却那么的少。

It is easier to fight for principles than to live up to them.
为原则而斗争容易，按原则的要求活着难。

It is easier to get money than to keep it.
挣钱容易攒钱难。

It is easy to be wise after the event.
事后诸葛亮好当。

It is easy to open a shop but hard to keep it always open.
创业容易守业难。

It is hard to please all.
众口难调。

It is impossible to defeat an ignorant man in argument.
在争论中是无法击败无知者的。