We have a responsibility to deliver energy in the most efficient and environmentally responsible way possible.

Art is contemplation. It is the pleasure of the mind which searches into nature and which there divines the spirit of which nature herself is animated.

The anarchic nature of the international system means that states must rely on self-help to ensure their survival.

数学是一种思维方式，而不仅仅是一堆事实。

可持续性不是一种选择；而是我们对后代的责任。

唯一使生活成为可能的是永久的、无法忍受的不确定性；不知道接下来会发生什么。