Where is everybody? Humans could theoretically colonize the galaxy in a million years or so, and if they could, astronauts from older civilizations could do the same. So why haven't they come to Earth?
Enrico FermiYoung man, if I could remember the names of these particles, I would have been a botanist.
Enrico Fermi[on what characteristics Nobel prize winning physicists had in common] I cannot think of a single one, not even intelligence.
Enrico Fermi