我没有特定的配方[用于开发新的证明]...这就是为什么做研究既具有挑战性又具有吸引力的原因。这就像在丛林中迷路，试图利用你能收集到的所有知识来想出一些新技巧，如果运气好的话，你可能会找到出路。
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.
You have to be willing to take risks and step out of your comfort zone.
The cost of inaction is far greater than the cost of action.
我不和别人竞争，我和自己竞争。
Coal keeps America competitive in the world.