The desert teaches you the value of water and the meaning of silence.
统治者的首要职责是保护社会免受其他独立社会的暴力和侵略,只有通过军事力量才能实现这一职责。
Courage is not the absence of fear, but the triumph over it.
物理学的未来不在于发现新的粒子,而在于理解支配我们已经知道的粒子行为的更深层次的原则。
The best way to predict the future is to create it.