I always do that at the end of shows, like a Q&A session. First of all it lets people know that this isn't some preprogrammed, press-play show where I have to say the exact same words in the exact same order. That's part of the thing with live comedy is that people like the fun aspect of it and I enjoy the taking questions part.

We're constantly re-evaluating the potential for life. We're finding it where we didn't think it could exist, such as volcanic vents and other extreme conditions like under arctic ice. We're finding life in these incredibly harsh and dynamic conditions, so we're having to re-evaluate our own ideas of what's possible on this planet alone.

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.

The people who could most benefit from the self-reflective ego-dissolving qualities of cannabis are the ones that want it to be illegal.

I had seen movies before that that had made me laugh, but I had never seen anything even remotely close to as funny as Richard Pryor was, just standing there talking.

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

I love existing in pre big bang conditions.