数学的力量在于它的普遍性和抽象性。
The end of history will be a very sad time. The struggle for recognition, the willingness to risk one's life for a purely abstract goal, the worldwide ideological struggle that called forth daring, courage, imagination, and idealism, will be replaced by economic calculation, the endless solving of technical problems, environmental concerns, and the satisfaction of sophisticated consumer demands.
世界是一本书,不旅行的人只读了一页。
没有事情随随便便发生,都是计划的一部分。
Innovation is not just about technology; it's about thinking differently.