Money isn't everything. 钱不是万能的。
Murder will out. 纸包不住火。 (又作：Truth will come to light sooner or later. )
My son is my son till he has got him a wife, but my daughter is my daughter all the days of her life. 儿子婚前是儿子，女儿终生是女儿。
Nature is the true law. 天行有常，不为尧存，不为桀亡。
Necessity is the mother of invention. 需要是发明的动力。
Never fish in troubled water. 不要混水摸鱼。 (Fish in troubled waters. 浑水摸鱼,趁火打劫)
Never judge from appearances. 不可以貌取人。
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 crown. 不经历风雨，怎么见彩虹。
No garden without its weeds. 没有不长草的园子。
No living man all things can. 世上没有万事通。
No man can do two things at once. 一心不可二用。
No man is born wise or learned. 没有生而知之者。
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 won't see. 视而不见。
None are so deaf as those who won't hear. 充耳不闻。
(turn a blind eye to 视而不见; turn a deaf ear to 置若罔闻)
No news is good news. 没有消息就是好消息。
No one can call back yesterday. 昨日不会重现。
No pains, no gains. 没有付出就没有收获。
No pleasure without pain. 没有苦就没有乐。
No rose without a thorn. 没有不带刺的玫瑰。
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。