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The problem of the modern age is the problem of the individual's self-preservation in the face of the overwhelming power of the social mechanism.

世界是一本書，不旅行的人只讀了一頁。

Nature tends to produce constancy in all her works, but she does not always succeed.

發現的喜悅是推動數學家前進的動力。

書籍是引導我們穿越人生的地圖。