一个人不仅可以通过他的行为对他人造成伤害，也可以通过他的不作为对他人造成伤害，无论哪种情况，他都应对他们负有道义责任。

You can't judge a book by its cover, but you can by its first chapter.

Sustainability isn't a choice anymore—it's a responsibility we owe to future generations.

When people are faced with a problem, they often think in terms of past experiences rather than looking at the actual structure of the problem.

The most effective leaders are those who lead by example.