颠倒，永远颠倒：把情况或问题颠倒过来。倒过来看。
Invert, always invert: Turn a situation or problem upside down.Look at it backward.
"And this I believe: that the free, exploring mind of the individual human is the most valuable thing in the world. And this I would fight for: the freedom of the mind to take any direction it wishes, undirected."
Sometimes the right path is not the easiest one.
企业要有社会责任感，不能只追求利润而忽视对环境的保护。
数学是模式的科学，而自然利用了每一种可能的模式。