He 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。

Learning is a bitter root, but it bears sweet fruit.

学习根苦果甜。

Learning is like rowing upstream; not to advance is to dropback.

学习如逆水行舟，不进则退。

Learning without thought is useless; thought without learning is dangerous.

学而不思则罔，思而不学则殆。

There is no end to learning.

学无止境。

Ignorance is the curse of God, knowledge the wing wherewith we fly to heaven.-- William

Shakespeare

无知乃是罪恶，知识乃是我们借以飞向天堂的翅膀。-- 莎士比亚

It is harder to conceal ignorance than to acquire knowledge.

掩盖无知要比学到知识更难。

Not 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。

Nothing is more terrible than ignorance in action.

最可怕的事莫过于无知而行动。

Wisdom is more precious than wealth.

智慧比财富更宝贵。

The wise man is always a good listener.

智者善听人言。

Wise men are silent; fools talk.

蠢人多话，智者寡言。

Reading makes a full man; conference a ready man; and writing an exact man.

-- Bacon

读书使人充实，讨论使人机敏，写作使人严谨。--培根

Reading enriches the mind.

开卷有益。