Every equation we write is a poem of the universe, a verse in the grand epic of existence.

质量不是梦想；它是一种现实。

"Books are the plane, and the train, and the road. They are the destination, and the journey. They are home."

The more you sweat in peace, the less you bleed in war.

The state of nature has a law of nature to govern it, which obliges every one: and reason, which is that law, teaches all mankind, who will but consult it, that being all equal and independent, no one ought to harm another in his life, health, liberty, or possessions.