The constant pursuit of wisdom is the highest goal of life.

The structure of the international system, not the intentions of individual states, is the primary determinant of state behavior.

Engineers are the ones who create the future. They’re the people who change the world.

人们不会问一个受苦的人：你的国家是什么？你的宗教是什么？人们只会说：你在受苦，这对我来说就足够了。

"The joy of writing is in the discovery of the unknown."

The greatest threat to our planet is the belief that someone else will save it.