I think the comic that's gotten me the most feedback is actually the one about the stoplights. Noticing when the stoplights are in sync, or calculating the length of your strides between floor tiles - normal people notice that kind of stuff, but a certain kind of person will do some calculations.

I'm not sure why we romanticize 'young love,' or love in general...It just leads to the idea that either your love is pure, perfect and eternal, and you are storybook-compatible in every way with no problems, or you're LYING when you say 'I love you.

I've always thought that one of the the great thing about physics is that you can add more digits to any number and see what happens and nobody can stop you.

You don't use science to show you're right, you use science to become right.

Google owns YouTube, and recently, I drew a comic about an idea for a YouTube feature - which they actually took seriously and implemented. So I'm thinking that maybe we'll have a future where Google is 'xkcd.'

Take wrong turns. Talk to strangers. Open unmarked doors. And if you see a group of people in a field, go find out what they are doing. Do things without always knowing how they'll turn out. You're curious and smart and bored, and all you see is the choice between working hard and slacking off. There are so many adventures that you miss because you're waiting to think of a plan. To find them, look for tiny interesting choices. And remember that you are always making up the future as you go.

I used to work at NASA in Virginia. It was nothing glamorous; I was just tasked with making code compile for obscure projects, and I wasn't very good at it. Now I spend most of my time drawing pictures and looking at funny things on the Internet, which in retrospect is largely what I did at my old job, too.