无政府状态是战争的允许性原因；它创造了一个国家必须依靠自助来确保生存的环境。
Anarchy is the permissive cause of war; it creates an environment in which states have to rely on self-help to ensure their survival.
炽烈的恨意可以给空虚的生活带来意义和目的。
Courage is resistance to fear, mastery of fear - not absence of fear.
In saying that someone did something， we may be doing something ourselves.
"The past is a foreign country; they do things differently there."
在量子物理学的领域里，观察者不仅仅是被动的观众，而是现实展开中的积极参与者。
可持续性已不再是一种选择——它是任何希望在将来蓬勃发展的企业的必要条件。