Napoleon himself was once a crying baby. 即使是拿破侖，過去也是啼哭的嬰孩。

Nature abhors a vacuum. 自然界里是沒有真空的。

Nature has given us two ears, two eyes, and but one tongue, to the end that we should hear and see more than we speak. 天賦我們兩耳，兩眼，一張嘴巴，歸根到底該多聽，多看，少說話。

Nature is the glass reflecting truth. 大自然是反應真理的一面鏡子。

Nature teaches us to love our friends but religion our enemies. 自然教我們愛朋友，宗教卻教我們愛敵人。

Nature, time, and patience are the three great physicians. 自然，時間和耐心，是三大偉大的醫生。

Nature will have its course. 天行其道。

Naughty boys sometimes make good men. 頑皮淘氣的男孩子有時成為仁人君子。

Necessity and opportunity may make a coward valiant. 需要和機會可能使懦夫變成勇士。

Necessity (or Need) has (or knows) no law. 需要面前無法律。

Necessity is the mother of invention 窮則變，變則通。

Necessity knows no law. 鋌而走險。

Need makes the old wife trot. 人急造反，狗急跳墻。(事急老嫗跑。)

Needs must when the devil drives. 情勢所迫，只好如此。

Neglect of health is doctors wealth. 忽視健康，醫生財旺。

Never be weary of well doing. 行善莫厭煩。

Never cackle till your egg is laid. 事竟成，才聲張。

Never cast dirt into that fountain of which thou hast sometime durnk. 不要過河拆橋。

Never do things by halves. 做事情不要半途而廢。

Never embark on what comes after without having mastered what goes before. 如未掌握好已學過的東西，切莫從事更深的學習。