技术应该是无形的。当它运行得最好时，你甚至不会注意到它。

The truth is that in America, the Jew is a figment of the Christian imagination.

The common question that gets asked in business is, 'why?' That's a good question, but an equally valid question is, 'why not?'

Le doute est le commencement de la sagesse.

The only valid data for psychology are observable behaviors.

我们是我们一再重复的行为。因此，卓越不是一种行为，而是一种习惯。