49.Birds of a feather flock together. 物以类聚，人以群分。

50.An idle youth, a needy age. 少壮不努力,老大徒伤悲。

51.It is never too old to learn. 活到老，学到老。

52.When the cat is away, the mice will play.山中无老虎，猴子称大王。

53.No cross, no crown. 不经历风雨，怎么见彩虹。

54.A friend in need is a friend indeed. 患难之交才是真朋友

55.Adversity makes a man wise, not rich. 逆境出人才。

56.Nothing is impossible (or difficult) to the man who will try. 世上无难事,只怕有心人。

57.Where there is a will, there is a way. 有志者事竟成。

58.Confidence in yourself is the first step on the road to success. 自信是走向成功的第一步。

59.Knowledge is power. 知识就是力量。

60.Knowledge advances by steps not by leaps. 知识的获得是循序渐进而不是突飞猛进的。

61.Learning makes a good man better and ill man worse. 知识能使好人更好，坏人更坏。

62.All work and no play makes Jack a dull boy. 只工作，不玩耍，聪明孩子要变傻。

63.Knowledge makes humble, ignorance makes proud. 博学使人谦逊，无知使人骄傲。

64.There is no end to learning. 学无止境。

65.One of these days is none of these days. 拖延时日，终难实现。

66.What may be done at any time will be done at no time. 常将今日推明日，推到后来无足迹。

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