一个行为的后果会影响它再次发生的概率。

Sustainability is not a style, it's a responsibility.

The wild is a place of extremes. To survive, you have to embrace both the highs and the lows.

The best way to find yourself is to lose yourself in the service of others.

Liberal democracy may constitute the "end point of mankind's ideological evolution" and the "final form of human government."