K
Knowledge is a treasure, but practice is key to it. 实践得真知。
Keeping is harder than winning. 创业不易，守业更难。
Knowledge is no burden. 艺不压身。
Kiss and be friends. 握手言和。
Kill two birds with one stone. 一箭双雕。
L
Let‘s cross the bridge when we come to it. 既来之，则安之。
Love is blind. 情人眼里出西施。
Little chips light great fires. 星星之火，可以燎原。
Like knows like. 惺惺相惜。
Live and learn. 学无止境。
M
Merry meet, merry part. 好聚好散。
Mind acts upon mind. 心有灵犀一点通。
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。