Sir Isaac Newton had a friend who was an atheist. The friend did not believe in God, but preferred to take the position that the universe just happened. One day the friend was visiting his learned colleague and Newton showed him a model of the solar system. The sun, the planets, and the moons were all in place. The sizes of the spheres were in proportion and the planets and the satellites revolved around the sun at their relative speeds. The friends admired the model. “It's intriguing,” he said, “who made it?”
“Nobody,” said Newton, “It just happened.”