The great philosophers are those who have made a difference in the way we think about the world and our place in it.

没有改变就不可能进步，而无法改变思想的人也无法改变任何事。

最令人兴奋的发现往往来自关注意想不到的结果。

最令人兴奋的突破往往来自意想不到的地方。