"I had an experience I can't prove, I can't even explain it, but everything that I know as a human being, everything that I am tells me that it was real. It was part of something wonderful, something that changed me forever; a vision of the Universe that tells us undeniably how tiny, and insignificant, and how rare and precioius we all are. A vision that tells us we belong to something that is greater than ourselves. That we are not, that none of us, are alone."
Carl Sagan