Here men from the planet Earth first set foot upon the Moon, July 1969 AD. We came in peace for all mankind. As we got further away, it (the Earth) diminished in size. Finally it shrank to the size of a marble, the most beautiful you could imagine. That beautiful, warm, living object looked so fragile, so delicate, that if you touched it with a finger it would crumble and fall apart. Seeing this has to change a man.
For those who have seen the Earth from space, and for the hundreds and perhaps thousands more who will, the experience most certainly changes your perspective. The things that we share in our world are far more valuable than those which divide us.