47. All things in their being are good for something. 天生我才必有用。

　　48. And gladly would learn ， and gladly teach.勤于學(xué)習(xí)的人才能樂(lè)意施教。

　　49. There is more than one way to skin a cat.到達(dá)目標(biāo)的設(shè)備多得很。

　　50. Action is the proper fruit of knowledge.行動(dòng)是知識(shí)之佳果。