Psychology must be a science of facts, not theories.

不屈服于非理性的思想，并不能因此免受统治的共谋。

译文：深夜独自思考，没人可以商量。劝你还是好好睡觉吧，穷富都是老天安排的。

In business, as in life, integrity is the foundation of trust.

Some people are extraordinarily good at knowing the limits of their knowledge because they have to be.