"The lunar flights give you a correct perception of our existence. You look back at Earth from the mo..." — Jim Lovell

The lunar flights give you a correct perception of our existence. You look back at Earth from the moon, and you can put your thumb up to the window and hide the Earth behind your thumb. Everything you've ever known is behind your thumb, and that blue-and-white ball is orbiting a rather normal star, tucked away on the outer edge of a galaxy.

Jim Lovell Astronaut • American