Psychology's task is to explain how mind serves life.

The essence of strategy is choosing what not to do.

"To write is to breathe, and to breathe is to live."

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.