without learning, without eyes.
he who will not learn when he is young will regret it when he is old.
learning is a bitter root, but it bears sweet fruit.
learning is like rowing upstream; not to advance is to dropback.
learning without thought is useless; thought without learning is dangerous.
there is no end to learning.
ignorance is the curse of god, knowledge the wing wherewith we fly to heaven. — william
無知乃是罪惡，知識乃是我們借以飛向天堂的翅膀。 — 莎士比亞
it is harder to conceal ignorance than to acquire knowledge.
not ignorance, but the ignorance of ignorance, is the death of knowledge.
nothing is more terrible than ignorance in action.
wisdom is more precious than wealth.
the wise man is always a good listener.
wise men are silent; fools talk.
reading makes a full man; conference a ready man; and writing an exact man.
reading enriches the mind.
he that can read an meditate will not find his evenings long or life tedious.
the reading of all good books is like a conversation with the finest men of
past centuries. — descartes
所有的好書，讀起來就如同和過去世界上最傑出的人談話。 — 笛卡爾
there is no royal road to science, and only those who do not dread the
fatiguing climb of its steep paths have a chance of gaining its
books, like friends, should be few and well chosen.
that is a good book which is opened with expectation and closed with profit. –l.w.akott
好書使人開卷有所求，閉卷有所獲。 — 奧爾科特
there is no such thing as genius; it is nothing but labour and diligence.