True innovation happens at the intersection of technology and necessity.

赏析：指出知道满足的人不会被利益所累，真正安闲自得的人不会因为失去而恐惧，注重内心修养的人不会因为没有地位而惭愧。

Train people well enough so they can leave, treat them well enough so they don't want to.

一个人可能发生的最糟糕的事情就是失去希望。