"The earth? Oh the earth will be gone in a few seconds...I'm going to blow it up. It's obstructing my view of Venus."
Marvin the Martian

Spaceships are for acrobats who are also mathematicians.
Robert A. Heinlein

Space is big. You just won't believe how vastly, hugely, mind-bogglingly big it is. I mean, you may think it's a long way down the road to the drug store, but that's just peanuts to space.”
Douglas Adams