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.

Humans should learn from nature.

The secondary rules are those that provide for the creation, alteration, and extinction of primary rules.

未来属于那些能够明智利用能源的人。