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.
Logic is the foundation of all mathematical reasoning.
The past is never dead. It's not even past.
在數(shù)學中，旅程往往比目的地更重要。
世界是一座監(jiān)獄，其中單獨監(jiān)禁更可取。