That's the whole problem with science. You've got a bunch of empiricists trying to describe things of unimaginable wonder.

I've never sat down to quantify how many hours I actually spend on the strip. I use the deadlines to estimate my progress; each month I know that I have to produce so many strips, and by the end of the month I'll make sure that I have.

For me, it's been liberating to put myself in the mind of a fictitious six year-old each day, and rediscover my own curiosity. I've been amazed at how one idea leads to others if I allow my mind to play and wander.

I write separately from the inking up. I'm sure this varies from cartoonist to cartoonist; I find that the writing is the hard part and the drawing is the fun part.

What's the point of wearing your favorite rocket ship underpants if nobody ever asks to see 'em?

I won't eat any cereal that doesn't turn the milk purple.

It seems the less I do and say, the better everyone likes my work!