You have to believe in yourself when no one else does.
当没有人相信你时，你必须相信自己。
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.
A healthy soul is as important as a healthy body.
数学的本质在于它的自由。
The best way to predict the future is to invent it.
Don’t wait for opportunities—create them.