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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 greatest glory in living lies not in never falling, but in rising every time we fall.
你唯一的限制是你给自己设定的限制。
"The world is full of signs, but we are often too blind to see them."