The best way to predict the future is to invent it.

在土地的寂静中，你可以听到我们祖先的声音。

"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."

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.

The study of mathematics is a constant dialogue between the concrete and the abstract.

书籍是世界上最强大的武器。