If you want knowledge,you must toil for it.
若要求知识，须从勤苦得。
A little knowledge is a dangerous thing.
浅学误人。
A handful of common sense is worth a bushel of learning.
少量的常识，当得大量的学问。
Knowledge advances by steps and not by leaps.
知识只能循序渐进，不能跃进。
Learn wisdom by the follies of others.
从旁人的愚行中学到聪明。