Nature is written in mathematical language.
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.
The most important political development of the last half century has been the spread of liberal democracy around the world.
"Books are the bridges that connect us to the future."