学习数学的最好方法就是做数学。
心流是完全为了活动本身而全身心投入。自我消失。时间飞逝。每一个动作、移动和思想都不可避免地跟随前一个，就像演奏爵士乐一样。你的整个身心都参与其中，并且你在最大限度地使用你的技能。
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.
译文：如果眼中没有离别的怨恨，就不会相信人间会有因相思而愁白了头的事。