Opportunities don’t happen; you create them.

In science, the only constant is change.

I'm the reason your car won't start.

我不让成功冲昏头脑，我让它触动心灵。

Happiness requires both pleasure and purpose - neither alone is sufficient.

On choosing friends: "Life's too short to hang out with people who aren't resourceful."

君子做学问，目的是为了明白道理，拯救社会。

The probability of a response is determined by its reinforcement history.

I think of a hero as someone who understands the degree of responsibility that comes with his freedom.