"Name the greatest inventors. Accident."
-Mark Twain

"When we do leave Earth, it will be by some means more sensible than shipping a 170lb sack of meat and water just to support a 3lb brain. The universe is entirely hostile to human life. If we settle other planets at all, we'll do it with bodies that aren't recognizably human anymore."
-unknown

"90% of human progress is the result of about 10% of the population."
-Jerry Pournelle