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.勤于學習的人才能樂意施教。

　　49. There is more than one way to skin a cat.到達目標的設備多得很。

　　50. Action is the proper fruit of knowledge.行動是知識之佳果。