who will not learn when he is young will regret it when he is old. 少壮不努力，老大徒伤悲。
is harder to conceal ignorance than to acquire knowledge. 掩盖无知要比学到知识更难。
ledge comes from experience alone.知识来自实践。
ledge is a city to the building of which every human being brought a stone.知识是一座城堡，每个人都应为它增砖添瓦。
ledge is a treasure, but practice is the key to it.知识是宝库，而实践是开启宝库的钥匙。
ledge is power.知识就是力量。
ledge is the food of the soul.知识是心灵的食粮。
ledge makes humble, ignorance makes proud.知识使人谦虚，无知使人骄傲。
ledge without practice makes but half an artist.有知识而无时间，只算半个能人。
n from the mistakes of others and prevent your own.前人犯错，后人戒。
n to creep before you leap.先学爬，后学跳。（循序渐进）
n young, learn fair.学习趁年少，而且要学好。
ning is a bitter root, but it bears sweet fruit. 学习根苦果甜。
ning is like rowing upstream; not to advance is to dropback. 学习如逆水行舟，不进则退。
ning is the eye of the mind.学问是心灵的眼睛。
ning without thought is useless; thought without learning is dangerous. 学而不思则罔，思而不学则殆。
ignorance, but the ignorance of ignorance, is the death of knowledge. 不是无知本身，而是对无知的无知，才是知识的死亡。
ing is more terrible than ignorance in action. 最可怕的事莫过于无知而行动。
wise man is always a good listener. 智者善听人言。
e is no end to learning. 学无止境。
e is no royal road to learning.学问之道无捷径。
is learned in the cradle is carried to the grave.孩提时代学到的东西，至死也不会忘却。
om is more precious than wealth. 智慧比财富更宝贵。
out learning, without eyes.没有学识就是盲人。
文书馆