Kepler, the astronomer, was troubled by one of his friends who denied the existence of God and took the view of the universe which prevails in some circles today, namely, that it came into being of itself by mechanical methods. Kepler, in order to convince his friend, constructed a model of the sun with the planets circling round it.
When his friend came into the Observatory and saw the beautiful model, he exclaimed with delight, “How beautiful it is! Who made it?” And Kepler carelessly answered, “No one made it: it made itself.” His friend looked at him and said, “Nonsense, tell me who made it.” Kepler then replied, “Friend, you say that this little toy could not make itself. It is but a very weak imitation of this great universe which, I understood, you believe did make itself.”