What we gain by experience is more real and more solid than what we gain by reasoning.
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 six colors， including the white background， represent the colors of all the world's flags ... this is a true international emblem.
Clarity and order are the foundations of good writing.
如果我们从土地中索取，就必须以同样的方式回馈。
所有复杂行为都可以简化为更简单的刺激-反应单元。