量的常识，当得大量的学问。
39.knowledge advances by steps and not by leaps.
知识只能循序渐进，不能跃进。
40.learn wisdom by the follies of others.
从旁人的愚行中学到聪明。
41.it is good to learn at another man’s cost.
前车可鉴。
42.wisdom is to the mind what health is to the body.
知识之于精神，一如健康之于肉体。
43.experience is the best teacher.
经验是最好的教师。
44.experience is the father of wisdom and memory the mother.
经验是知识之父，记忆是知识之母。
45.dexterity comes by experience.
熟练来自经验。
46.practice makes perfect.
熟能生巧。
47.experience keeps a dear school,but fools learn in no other.
经验学校学费高，愚人旁处学不到。
48. experience without learning is better than learning without experience.
有经验而无学问，胜于有学问而无经验。
49.wit once bought is worth twice taught.
由经验而得的智慧，胜于学习而得的智慧；一次亲身的体会，胜过两次的教师教导。
50.seeing is believing.
百闻不如一见。