18. To pretend that the supernatural is the necessary foundation of all religion, that it is the key to the whole arch of the Christian edifice, is to sustain a dangerous thesis. If one makes the truth of Christianity rest solely upon the base of miracle, he gives it but a fragile support, from which stones are detached every day. This belief, of which some eminent theologians are defenders, conducts rightly to the conclusion that, in a given time, no religion will be possible, not even the Christian religion, if that which is regarded as supernatural be demonstrated as natural; for so many arguments will be heaped against it that no one will be able to maintain the miraculous character of any fact after its naturalness has been proved. Now, the proof that a fact is no exception to natural laws is, that it can be explained by these laws, and that, being able to be reproduced by the intermediation of any individual whatever, it ceases to be the exclusive property of saints. It is not the supernatural which is essential to religion, but the spiritual principle which has been so mischievously confounded with the marvelous, and without which religion is impossible.
Spiritism considers the Christian religion at a more elevated point; it gives to it a more solid base than miracles, that is, the immutable laws of God, which rule the spiritual equally with the material principle. This base bids defiance to time and science alike; for time and science will at length sanction it.
God is no less worthy of our admiration, gratitude, or respect, because he does not derogate his laws, grand beyond all else in their immutability. He needs not the supernatural as an element in his worship. Nature is sufficiently imposing of itself, without any additions, to prove the existence of the Supreme Power. Religion will find each time less incredulous ones, the more reason sanctions it. Christianity can lose nothing by this sanction: it, on the contrary, gains by it. If anything has destroyed it, in the opinion of certain people, it is the abuse of the marvelous or supernatural.