冬天已经到来，春天还会远吗？

如果你想得到一切，就放下一切。

Science is the playground of the taxonomist.

大胆梦想，努力工作，永远不要放弃你所相信的。

I want to liberate America from fear. I want people to be afraid of the things that are really scary, like war and famine, not their neighbor because he has a different religion.

The absurdity of life doesn't make it meaningless, but rather gives it a special kind of meaning.

数学是一门活生生的学科，随着新思想的出现而不断发展。