"Books are the most powerful weapons in the world."
书籍是世界上最强大的武器。
夜晚觉察到早晨的错误,今日悔恨昨日的过失。
The highest possible stage in moral culture is when we recognize that we ought to control our thoughts.
——《在广州中国国民党恳亲大会的演说》(1923年10月15日)