I have to say to myself that some birds aren't very close. Their feathers are just too bright. When they fly away, you know it's a sin to lock them up, and you'll be inspired by them. Still, the place you live in is that much more drab and empty that they're gone. I think I really miss my friends.

I don't have any particular recipe [for developing new proofs] ... It is the reason why doing research is challenging as well as attractive. It's like being lost in a jungle and trying to use all the knowledge that you can gather to come up with some new tricks, and with some luck you might find a way out.

自由是告诉人们他们不想听的事情的权利。

The hardest part of design is keeping features out.

【大意】只有不求利益之人才能不导致害处，只有不求福分之人才能没有祸患。

凡事需多听但少言；聆听他人之意见，但保留自己之判断。