Lock up your libraries if you like; but there is no gate, no lock, no bolt that you can set upon the freedom of my mind.
你可以锁上你的图书馆；但对我的思想自由，你无法设置任何门闩、锁或插销。
The world is a very complicated place, and it's not always easy to understand what's happening around us.
数学的美只对那些更有耐心的追随者展现。
The history of life is written in A, T, C, and G.
"Escribir es un acto de libertad, y la libertad siempre es peligrosa para quienes quieren controlar las mentes."
The best time to plant a tree was twenty years ago. The second best time is now.