Dick Gregory was a great comedian who went and got arrested, did hunger strikes, protests. It never hurt his career to be outspoken.

I prefer older people to college kids [as audience] for the most part. I want people with life experience, people that understand where I'm coming from.

Anytime we go to a new town I try to book a show. I literally know nothing about the club.

I'm really happy that I've been able to make people laugh and distract them from their day to day bullshit at a comedy show or because they enjoyed one of my CDs or TV specials, but I don't know how many people have actually had life changing thoughts because of it.

If you ever start taking things too seriously, just remember that we are talking monkeys on an organic spaceship flying through the universe.

The Universe rewards calculated risk and passion

What's interesting about science is that we're constantly discovering new things about the universe, about ourselves, about our bodies, about diseases, about the possibilities of the future. It's amazing. Science is one of the coolest things about being a human being - without a doubt.