It is never too old to learn.

活到老，学到老。

There is no royal road to learning.

学问无坦途。(书山有路勤为径,学海无涯苦作舟)

Lie down with dogs, wake up with fleas.

与狗同眠，醒来一身虱。

A bad beginning makes a bad ending.

一个不好的开始一定会造就一个不好的结局。

A man becomes learned by asking questions.

不耻下问才能有学问。

Don't put the cart before the horse.

套车之前先备好马。

Better the devil you know than the one you don't.

明枪易躲,暗箭难防

If wishes were horses, beggars would ride.

如果愿望都能实现，乞丐早就发财了。

Don't talk the talk if you can't walk the walk.

不要说一套做一套。

A light heart lives long.

豁达者长寿。

Fortune favors the bold.

幸运眷顾勇敢者。

Two wrongs don’t make a right.

两个错误不等于一个正确。

Champions are made when no one is watching.

十年寒窗无人问，一朝夺冠(夺魁)天下知。

The pen is mightier than the sword.

笔尖胜过干戈。

When the going gets tough, the tough get going.

遇到逆境，勇者逆流而上.

People who live in glass houses should not throw stones.

自己住在玻璃屋，不要向别人扔石头。

Keep your friends close and your enemies closer.

亲近你的朋友，更要亲近你的敌人。

A picture is worth a thousand words.

一张图片胜过千言万语。

Never look a gift horse in the mouth.

别人送的马，不要看马齿。意思是不要挑剔得到的礼物。

If you're not part of the solution, you're part of the problem.

如果你不是解决方案的一部分，你就是问题的一部分。

Beauty is in the eye of the beholder.

情人眼里出西施

Absence makes the heart grow fonder.

小别胜新婚; 距离产生美; 久别情更深。

When the cat is away, the mice will play.

山中无老虎，猴子称大王。

Nothing to be got without pains but poverty.

一份耕耘，一份收获。

Nothing succeeds like success.

一顺百顺。

Nothing so necessary for travellers as languages.

旅行者最需要的是几种语言。

Nothing so bad, as not to be good for something.

塞翁失马,安知非福。

Nothing seek, nothing find.

无所求则无所获。

Nothing must be done hastily but killing of fleas.

除非捉跳蚤, 做事不用急。

Nothing is stolen without hands.

无风不起浪。

No one (or man) is born wise or learned.

人非生而知之者。

No news is good news.

没有消息也许就是最好的消息。

None preaches better than the ant, and she says nothing.

蚂蚁不说话,但最善于说教。

None knows the weight of another's burden.

看人挑担不吃力。

None but the wearer knows where the shoe pinches.

只有那个穿鞋人,才知哪里鞋轧脚。