最好的音乐来自内心。

The fact that there is nothing permanent except change is a permanent theme in nature.

Inflation is a very bold idea, but it seems to be the only way to explain the observed features of the universe.

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.

"Writing is a way of talking without being interrupted."