The human race is just a chemical scum on a moderate-sized planet, orbiting around a very average star in the outer suburb of one among a hundred billion galaxies. We are so insignificant that I can't believe the whole universe exists for our benefit. That would be like saying that you would disappear if I closed my eyes.
Stephen HawkingIt's the gravity that shapes the large scale structure of the universe, even though it is the weakest of four categories of forces
Stephen Hawking