"A man is rich in proportion to the number of things he can afford to let alone."

你给予的越多，得到的就越多。

根据问题出现的背景，代数实部可以接受从负无穷到正无穷的所有数值。

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.

我的作品是我灵魂的投射。