I want to be remembered as someone who made a difference.

Doubt is the beginning of wisdom, not its enemy.

Everyone seems to have a clear idea of how other people should lead their lives, but none about his or her own.

In the oil industry, efficiency and sustainability are two sides of the same coin.

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.

人人生而平等。