Science is the best idea humans have ever had. The more people who embrace that idea, the better.

Climate change is happening, humans are causing it, and I think this is perhaps the most serious environmental issue facing us.

You start doing the addictive behavior to feel good and then your receptors get overloaded with dopamine, then you stop doing the addictive thing and some of the receptors have shut down and you don't have enough dopamine to feel good. So then you feel bad and go back to the addictive behavior to get more dopamine. The strange thing is that it works with what we think of as uppers and downers and whatever you call gambling - sidewaysers.

As my old professor Carl Sagan said so often, 'When you’re in love, you want to tell the world.’ And I base my beliefs on the information and the process that we call science. It fills me with joy to make discoveries every day of things I’ve never seen before. It fills me with joy to know that we can pursue these answers. It is an astonishing thing that we are — you and I are one of the ways the universe knows itself.

History is but the record of the public and official acts of human beings. It is our object, therefore, to humanize our history and deal with people past and present; people who ate and possibly drank; people who were born, flourished and died; not grave tragedians, posing perpetually for their photographs.

I used to play ultimate Frisbee, and I just got a reputation for making popcorn at parties. I don't mean to brag on myself, but I make the popcorn in the pot, and it comes out fine every time.

People confuse the word cynicism with the word skepticism. One is “you’re not gonna pay attention to anything, think everything’s screwed up, nothing’s ever gonna work out right”, that’s cynicism. But skepticism is, “you’re presented with evidence and you do your best to draw conclusions based on that”. So, as the saying goes, Bill Nye, do you believe in ghosts? No. However, I would love to see one. Bring it on. I’m open minded to the idea, but the more I look into it in a skeptical frame of thinking, the less likely it seems.