心理学必须是一门观察的科学，而非推测。

The key to power is the ability to judge who is best to serve your purposes, and then to win them over to your side.

人很容易被自己的利益驱使，仅仅让他看到正确是不够的，还必须让他感受到它。

在制造业中，精确和热情必须齐头并进。