If, in the economy of all Divine revelations, I am unable to recognize either the wisdom, the goodness, or the equity of a God; if I suspect deceit, ambition, selfish designs in the great personages who have interposed between Heaven and us, I am assured that God has confirmed, by splendid miracles, the mission of those who have spoken for Him. But was it not much easier to show Himself, and to explain for Himself? On the other hand, if I have the curiosity to examine these miracles, I find that they are tales void of probability, related by suspicious people, who had the greatest interest in making others believe that they were sent from the Most High.
What witnesses are referred to in order to make us believe incredible miracles? They call as witnesses stupid people, who have ceased to exist for thousands of years, and who, even if they could attest the miracles in question, would be suspected of having been deceived by their own imagination, and of permitting themselves to be seduced by the illusions which skillful impostors performed before their eyes. But, you will say, these miracles are recorded in books which through constant tradition have
been handed down to us. By whom were these books written? Who are the men who have transmitted and perpetuated them?
They are either the same people who established these religions, or those who have become their adherents and their assistants. Thus, in the matter of religion, the testimony of interested parties is irrefragable and can not be contested!
Source: Superstition In All Ages, Jean Meslier