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.

Sustainability isn't a choice; it's our responsibility to future generations.

The man who is fit to handle pig iron is not fit to handle the management of pig iron.

What is learned is not movements but meanings.

优秀和卓越的区别在于对细节的关注。

生命的秘诀不仅是生存，而是以激情、同情、幽默和风格茁壮成长。