41.It is good to learn at another man's cost.
前車可鑒。
42.Wisdom is to the mind what health is to the body.
知識(shí)之于精神，一如健康之于肉體。
43.Experience is the best teacher.
經(jīng)驗(yàn)是最好的教師。
44.Experience is the father of wisdom and memory the mother.
經(jīng)驗(yàn)是知識(shí)之父，記憶是知識(shí)之母。
45.Dexterity comes by experience.
熟練來(lái)自經(jīng)驗(yàn)。