Happiness ain't a thing in itself --- it's only a contrast with something that ain't pleasant. That's all it is.

夏天的飞鸟，飞到我窗前唱歌，又飞去了。秋天的黄叶，他们没有什麽可唱的，只是叹息一声，飞落在那里。

You are not defined by your past. You are prepared by your past.

我相信一切事情的发生都有其原因。

Technology should serve humanity, not the other way around.

The artist is the antenna of the human race.

科学家只强加两件事，即真理和真诚，强加于自己和其他科学家。