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 most important thing is to keep the audience engaged.

I think the greatest thing in life is to be able to give back.

在语言中，我们发现了人类创造力的本质。