Every challenge is an opportunity in disguise.
每一个挑战都是伪装的机遇。
It is common sense to take a method and try it. If it fails, admit it frankly and try another. But above all, try something.
在野外,没有第二次机会。你必须第一次就做对。
人们并不总是理性的,他们的非理性行为可能会产生重大的经济后果。