Psychology must be a purely descriptive science.

I think the act of reading imbues the reader with a sensitivity toward the outside world that people who don't read can sometimes lack.

The dead are the most persistent historians.

A company’s culture is defined by the values it upholds, not just the products it sells.

I'm a black American, I am proud of my race. I am proud of who I am. I have a lot of pride and dignity.

I'm not a prophet, I'm a messenger.

有机催化的力量在于它经常为复杂问题提供令人惊讶的简单解决方案。