Pale Blue Dot
Consider again that dot.

That's here. That's home. That's us.

On it, everyone you love, everyone you know, everyone you've ever heard of, ever human being who ever was lived out their lives.

The aggregates of joy and suffering thousands of confident religions, ideologies and economic doctrines, every hunter and forager, every hero and coward, every creator and destroyer of civilization, every king and peasant, every young couple in love, every mother and father, hopeful child, inventor and explorer, every teacher of morals, every corrupt politician, every superstar, every supreme leader, every saint and sinner in the history of our species, lived there, on a mote of dust, suspended in a sunbeam.

It's been said that astronomy's a humbling and character-building experience.

There is perhaps no better demonstration of the folly of human conceits than this distant image of our tiny world.

To me, it underscores our responsibility to deal more kindly with one another and to preserve and cherish the pale blue dot, the only home we've ever know.