这个熟睡的小王子最叫我感动的地方是，他对一朵玫瑰的感情——甚至他睡着了，那朵玫瑰花的影子，仍像灯光一样照亮他的生命……
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.
数学的本质在于它的自由。
Every line you draw should have a purpose, even if it's just to make someone smile.
The past is a shadow that shapes the present.