事实是，世界是这样构建的，如果你想享受它的果实，你就必须服从它的规则。
The truth is, the world is so constructed that if you wish to enjoy its fruits, you must submit to its rules.
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.
——〈建国方略之一：孙文学说——行易知难〉，1919年5月20日
