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.

释义：看到已经发生的事情要谨慎对待将要发生的事情，厌恶某种行为轨迹的人必须避开它。害怕危险的人才能平安，害怕灭亡的人才能生存。这是对谨慎行事、防患未然的智慧的强调。

不要去跟随已经有的道路，去探索没有被开拓的新道路，留下自己的足迹。

建筑是赋予场所精神以形式的艺术。