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 beauty of biology lies in its ability to explain the diversity of life through simple principles.

一个人固守道德而不能发扬光大，信仰主张又不能坚定不移，这种人有他不能算有，没有他不能算无。