The most beautiful works of art are those in which necessity and freedom are in perfect balance.

"I think people believe in heaven because they don’t like the idea of dying, because they want to carry on living and they don’t like the idea that other people will move into their house and put their things into the rubbish."

科学中最重要的不是获得新的事实，而是发现思考它们的新方法。

最伟大的实验始于一个简单的问题。