I don't feel bad about the fact that I notice if a lot of people laugh at a comic, and think, 'That worked; I'll do things like that more.'

I have no artistic training - as you might have guessed from all the stick figures! - and there are a few things I have a really hard time drawing. I think the one that comes up the most is airplanes. Big airliners have such a weird wing shape, and I always have to redraw them 20 times before they're even recognizable.

I think the weirdest question I've ever gotten was, 'If people had wheels and could fly, how would we differentiate them from airplanes?'

Randall Munroe Quotes