Virtue is more to be feared than vice, because its excesses are not subject to the regulation of conscience.
The deterioration of every government begins with the decay of the principles on which it was founded.
Man is condemned to be free.
Sustainability is no longer optional—it's a business imperative.
科学家研究自然并非因为它有用;他研究它是因为他从中获得乐趣,而他从中获得乐趣是因为它是美丽的。
沉默从来不是空的;它充满了可能性。
The truth is, we are all capable of terrible things. But we are also capable of great kindness.