Neil deGrasse Tyson
Perhaps we've never been visited by aliens because they have looked upon Earth and decided there's no sign of intelligent life.
More quotes and aphorisms
Sex alleviates tension...You use a glass mirror to see your face...The erosion of extended family concept...I'm from Florida, so any time I get invited to come...I did most of my volunteer work when I was in college...Growing economies are critical; we will never be able...