我已经履行了我的职责。我证明了庞加莱猜想，我在数学上没有什么可做的了。

Life is not a series of gig lamps symmetrically arranged; life is a luminous halo, a semi-transparent envelope surrounding us from the beginning of consciousness to the end.

We are the products of countless chance events.

Nothing spoils a romance so much as sense of humour in the woman—or the want of it in the man.