1014 – “Sometimes I think the surest sign the intelligent life exists elsewhere in the universe is that none of it has tried to contact us.”

-Calvin in Bill Watterson’s Scientific Progress Goes “Boink”


618 – “The Universe is probably littered with one-planet graves of cultures which made the sensible economic decision that there’s no good reason to go into space – each discovered, studied, and remembered by the ones who made the irrational decision.”

–Randall Munroe