Labour is light where love doth pay. 爱情作酬报，劳苦必轻松。
Labour is often the father of pleasure. 勤劳常为快乐之源。
Labour is the capital of our working men. 劳动力是劳动人民的资本。
Lack of knowledge is darker than night. 没有知识比黑夜还要黑。
Late repentance is seldom true. 后悔少有诚意。
Laugh and grow fat. 心宽体胖。
Laugh, and the world laughs with you; weep, and you weep alone. 你笑，人人陪你笑；你哭，惟独你自哭。
Laugh at your ills, And save doctors' bills. 生病不忧虑，节省医药费。
Laugh before breakfast you'll cry before supper. 乐极生悲。
Law makers should not be law breakers. 正人先正己。
Laws catch flies but let hornets go free. 法网只捉苍蝇，不捉黄蜂。
Lawsuits consume time, and money, and rest, and friends. 诉讼将消耗时间、金钱、休息和失去朋友。
Lazy folks take the most pains. 懒汉多吃苦。
Learning is an ornament in prosperity, a refuge in adversity, and a provision in old age. 学问在得意时是装饰品，失意时是庇护所，年老时是供应品。
Learning is wealth to the poor, an honour to the rich, an aid to the young, and a support and comfort to the aged. 学问是穷人的财富，是富人的荣誉，是青年的帮助，是老年的支持和安慰。
Learning makes a good man better and ill man worse. 知识能使好人更好，坏人更坏。
Learning without thought is labour lost; thought without learning is perilous. 学而不思则罔，思而不学则殆。
Learn to creep before you leap. 循序渐进。
Learn to say before you sing. 按部就班。
Learn to suffer without complaining; that is the best thing I can teach you. 要学会受痛苦而不怨，这是我教你的至要之事。
Learn to walk before you run. 循序渐进。
Learn wisdom by the follies of others. 要从别人的愚行中学到聪明。
Learn young, learn fair. 学习趁年轻，既学就学好。
Least said, soonest mended. 多说反坏事。
Lend your money and lose your friend. 赔了夫人又折兵。
Let beggars match with beggars. 龙配龙，凤配凤。
Let bygones be bygones. 既往不昝。
Let difficulties occur but not the loss of courage. 纵使困难重重，也不丧失勇气。
Let every man praise the bridge he goes over. 饮水思源。
Let every man speak well of the bridge theat carries him over. 饮水思源。
Let every tub stand on its own bottom. 各人管各人自己。
Let not the cobbler go beyond his last. 安分守己。
Let not the sun go down upon thy wrath. 日落之前，平息你的怒火吧。
Let our object be our courtry, our whole country, and nothing but our country. 我们的心目中要有国家，要有整个国家，而且只有我们的国家别如其他。
Let's cross the bridge when we come to it. 既来之，则安之。
Let sleeping dogs lie. 不要惹事生非。
Let the cobbler stick to his last. 安分守己。
Let the dead bury the dead. 往事不重提。
Let the hands get busy, not the mouth. 手要勤劳，嘴莫多说。
Let things take their course. 听其自然。
Let your yea be yea and your nay be nay. 是就是，非就非。
Liars have need of good memories. 谎言者要有好的记忆力。
Liars should have good memories. 说谎的人应有好的记性。
Liberty consists in the power of doing that which is permitted by law. 自由就是做法律许可做的事情的权力。
Liberty is not licence. 自由不是放纵。
