That's the amazing thing about life. You can just rub it out, like a blackboard, and start again.

Science seeks the truth. And it does not discriminate. For better or worse it finds things out. Science is humble. It knows what it knows and it knows what it doesn’t know. It bases its conclusions and beliefs on hard evidence -­- evidence that is constantly updated and upgraded. It doesn’t get offended when new facts come along. It embraces the body of knowledge. It doesn’t hold on to medieval practices because they are tradition.

Do this or you’ll burn in hell.

Some [people] are really smart. You know who you are. Some [people] are really thick. Unfortunately, you don't know who you are.

If I do eat meat, it's got to be ethical. I want to know that it lived a great life before it was killed humanely.

There's a difference between a job and a career - if you're the boss you don't stop at six o'clock, you have to worry about everything all the time.

To complain about critics in a business is like a sailor complaining about the waves. Go back to the beach if you don't like it.