"Your royal highness’s discourse concerning the System of the World, and the threat of its running awry at some future time, puts me in mind of a thing I do not understand in the philosophy of Sir Isaac Newton," Leibniz began. "Sir Isaac describes that System by which the heavenly bodies are kept in their gyres, and made to orbit round and round forever. Fine. But he seems to say that God, who created this system and set it in motion, must from time to time reach in and tinker with it, as a horologist adjusts the workings of his clock. As if God lacked the foresight, or the power, to make it a perpetual motion."