Earth (2007):

"We all inhabit this small planet. We all breathe the same air. We all cherish our children's future. And we are all mortal."

--John F. Kennedy Jr.

" The same rocket technology that delivers nuclear warheads has also taken us peacefully into space. From that perspective, we see our Earth as it really is -- a small and fragile and beautiful blue globe, the only home we have. We see no barriers of race or religion or country. We see the essential unity of our species and our planet; and with faith and common sense, that bright vision will ultimately prevail."

--Jimmy Carter