N

Nothing comes wrong to a hungry man. 饥不择食No cross, no crown. 不吃苦中苦，难为人上人。

Nothing is easier than fault-finding. 站着说话不腰痛。

No weal without woe. 福兮祸所伏, 祸兮福所倚。

No work, no money. 不劳无获。

Never too late (or old) to learn. 活到老，学到老。

Never judge by appearances. 切莫以貌取人。

No fire without smoke. 无风不起浪。

O

One cloud is enough to eclipse all the sun.一叶障目，不见泰山。

One swallow does not make a summer. 一花独放不是春。

One can not be in two places at once. 一心不可二用。

Obedience is the first duty of a soldier. 服从是军人的天职。

One lark does not make a spring. 一花独放不是春。

P

Practice is better than precept. 身教重于言教。

Poverty is stranger to industry. 勤劳之人不受穷。

R

Riches have wings. 富贵无常。