An empire founded by war has to maintain itself by war.

The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.

The desert teaches you the value of water, and exile teaches you the value of home.

The success of an enterprise cannot be achieved without the continuous pursuit of technology and strict control of quality.

每个人持续不断地努力改善自己的状况，这是公共、国家以及私人富裕最初来源的原则。

The only thing necessary for the triumph of evil is for good men to do nothing.

在科学中最重要的不是解决问题，而是提出正确的问题。