Nature is the true law.
天行有常，不为尧存，不为桀亡。
Necessity1 is the mother of invention.
需如果创造的动力。
Never fish in trouble water.
不要混水摸鱼。
Never judge from appearances.
不能貌取人。
Never say die.
永不言败。
Never too old to learn, never too late to turn.
亡羊补牢，为时未晚。
New wine in old bottles.
旧瓶装新酒。
No cross, no crown2.
不历程风雨，如何见彩虹。
No garden without its weeds.
没不长草的园子。
No living man all things can.
世上没万事通。
No man can do two things at once.
一心不可二用。
No man is born wise or learned3.
没生而知之者。
No man is content.
人心不足蛇吞象。
No man is wise at all times.
聪明一世，糊涂一时。
None are so blind as those who wont see.
视若无睹。
None are so deaf as those who wont hear.
充耳不闻。
No news is good news.
没消息就是好消息。
No one can call back yesterday.
昨日不会重现。
No pains, no gains.
没付出就没收成。
No pleasure without pain.
没苦就没乐。
No rose without a thorn4.
没不带刺的玫瑰。
No sweet without sweat.
先苦后甜。
No smoke without fire.
无风不起浪。
Nothing brave, nothing have.
不入虎穴，焉得虎子。
Nothing dries sooner than a tear.
眼泪干得最快。
Nothing in the world is difficult for one who sets his mind to it.
世上无难事，只怕有心人。
Nothing is difficult to the man who will try.
世上无难事，只须肯登攀。
Nothing seek, nothing find.
没追求就没收成。
Nothing is so necessary for travelers as languages.
外出旅游，语言最要紧。
Nothing is to be got without pains but poverty.
世上唯有贫穷可以不劳而获。
Not to advance is to go back.
不进则退。
Not to know what happened before one was born is always to be a child.
不懂世故，幼稚可笑。
No way is impossible to courage.
勇者无惧。
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