After Shaftesbury had based morality on a natural instinct for the beautiful and had made it independent of religion, as well as served the cause of free thought by a keenly ironical campaign against enthusiasm and orthodoxy, and Clarke had furnished the representatives of natural religion a useful principle of morals in the objective rationality of things, the debate concerning prophecy and miracles[1] threatened to dissipate the deistic movement into scattered theological skirmishes. At this juncture Matthew Tindal (1657-1733) led it back to the main question. His _Christianity as Old as the Creation_ is the doomsday book of deism. It contains all that has been given above as the core of this view of religion. Christ came not to bring in a new doctrine, but to exhort to repentance and atonement, and to restore the law of nature, which is as old as the creation, as universal as reason, and as unchangeable as God, human nature, and the relations of things, which we should respect in our actions. Religion is morality; more exactly, it is the free, constant disposition to do as much good as possible, and thereby to promote the glory of God and our own welfare. For the harmony of our conduct with the rules of reason constitutes our perfection, and on this depends our happiness. Since God is infinitely blessed and self-sufficient his purpose in the moral law is man's happiness alone. Whatever a positive religion contains beyond the moral law is superstition, which puts emphasis on worthless trivialities. The true religion occupies the happy mean between miserable unfaith, on the one hand, and timorous superstition, wild fanaticism, and pietistical zeal on the other. In proclaiming the sovereignty of reason in the sphere of religion as well as elsewhere, we are only openly demanding what our opponents have tacitly acknowledged in practice _(e. g_.> in allegorical interpretation) from time immemorial. God has endowed us with reason in order that we should by it distinguish truth from falsehood.