"Consider, my friend, the terrible controversy in which I am now engaged; what vast learning is required to go back to the remotest antiquity, to examine, weigh, confront prophecies, revelations, facts, all the monuments of faith set forth throughout the world, to assign their date, place, authorship, and occasion. What exactness of critical judgment is needed to distinguish genuine documents from forgeries, to compare objections with their answers, translations with their originals; to decide as to the impartiality of witnesses, their common-sense, their knowledge; to make sure that nothing has been omitted, nothing added, nothing transposed, altered, or falsified; to point out any remaining contradictions, to determine what weight should be given to the silence of our adversaries with regard to the charges brought against them; how far were they aware of those charges; did they think them sufficiently serious to require an answer; were books sufficiently well known for our books to reach them; have we been honest enough to allow their books to circulate among ourselves and to leave their strongest objections unaltered?
"When the authenticity of all these documents is accepted, we must now pass to the evidence of their authors' mission; we must know the laws of chance, and probability, to decide which prophecy cannot be fulfilled without a miracle; we must know the spirit of the original languages, to distinguish between prophecy and figures of speech; we must know what facts are in accordance with nature and what facts are not, so that we may say how far a clever man may deceive the eyes of the simple and may even astonish the learned; we must discover what are the characteristics of a prodigy and how its authenticity may be established, not only so far as to gain credence, but so that doubt may be deserving of punishment; we must compare the evidence for true and false miracles, and find sure tests to distinguish between them; lastly we must say why God chose as a witness to his words means which themselves require so much evidence on their behalf, as if he were playing with human credulity, and avoiding of set purpose the true means of persuasion.
"Assuming that the divine majesty condescends so far as to make a man the channel of his sacred will, is it reasonable, is it fair, to demand that the whole of mankind should obey the voice of this minister without making him known as such? Is it just to give him as his sole credentials certain private signs, performed in the presence of a few obscure persons, signs which everybody else can only know by hearsay? If one were to believe all the miracles that the uneducated and credulous profess to have seen in every country upon earth, every sect would be in the right; there would be more miracles than ordinary events; and it would be the greatest miracle if there were no miracles wherever there were persecuted fanatics. The unchangeable order of nature is the chief witness to the wise hand that guides it; if there were many exceptions, I should hardly know what to think; for my own part I have too great a faith in God to believe in so many miracles which are so little worthy of him.
"Let a man come and say to us: Mortals, I proclaim to you the will of the Most Highest; accept my words as those of him who has sent me; I bid the sun to change his course, the stars to range themselves in a fresh order, the high places to become smooth, the floods to rise up, the earth to change her face. By these miracles who will not recognise the master of nature? She does not obey impostors, their miracles are wrought in holes and corners, in deserts, within closed doors, where they find easy dupes among a small company of spectators already disposed to believe them. Who will venture to tell me how many eye-witnesses are required to make a miracle credible! What use are your miracles, performed if proof of your doctrine, if they themselves require so much proof! You might as well have let them alone.
"There still remains the most important inquiry of all with regard to the doctrine proclaimed; for since those who tell us God works miracles in this world, profess that the devil sometimes imitates them, when we have found the best attested miracles we have got very little further; and since the magicians of Pharaoh dared in the presence of Moses to counterfeit the very signs he wrought at God's command, why should they not, behind his back, claim a like authority? So when we have proved our doctrine by means of miracles, we must prove our miracles by means of doctrine,74 for fear lest we should take the devil's doings for the handiwork of God. What think you of this dilemma?
"This doctrine, if it comes from God, should bear the sacred stamp of the godhead; not only should it illumine the troubled thoughts which reason imprints on our minds, but it should also offer us a form of worship, a morality, and rules of conduct in accordance with the attributes by means of which we alone conceive of God's essence. If then it teaches us what is absurd and unreasonable, if it inspires us with feelings of aversion for our fellows and terror for ourselves, if it paints us a God, angry, jealous, revengeful, partial, hating men, a God of war and battles, ever ready to strike and to destroy, ever speaking of punishment and torment, boasting even of the punishment of the innocent, my heart would not be drawn towards this terrible God, I would take good care not to quit the realm of natural religion to embrace such a religion as that; for you see plainly I must choose between them. Your God is not ours. He who begins by selecting a chosen people, and proscribing the rest of mankind, is not our common father; he who consigns to eternal punishment the greater part of his creatures, is not the merciful and gracious God revealed to me by my reason.
"Reason tells me that dogmas should be plain, clear, and striking in their simplicity. If there is something lacking in natural religion, it is with respect to the obscurity in which it leaves the great truths it teaches; revelation should teach us these truths in a way which the mind of man can understand; it should bring them within his reach, make him comprehend them, so that he may believe them. Faith is confirmed and strengthened by understanding; the best religion is of necessity the simplest. He who hides beneath mysteries and contradictions the religion that he preaches to me, teaches me at the same time to distrust that religion. The God whom I adore is not the God of darkness, he has not given me understanding in order to forbid me to use it; to tell me to submit my reason is to insult the giver of reason. The minister of truth does not tyrannise over my reason, he enlightens it.
"We have set aside all human authority, and without it I do not see how any man can convince another by preaching a doctrine contrary to reason. Let them fight it out, and let us see what they have to say with that harshness of speech which is common to both.
"INSPIRATION: Reason tells you that the whole is greater than the part; but I tell you, in God's name, that the part is greater than the whole.
"REASON: And who are you to dare to tell me that God contradicts himself? And which shall I choose to believe. God who teaches me, through my reason, the eternal truth, or you who, in his name, proclaim an absurdity?
"INSPIRATION: Believe me, for my teaching is more positive; and I will prove to you beyond all manner of doubt that he has sent me.
"REASON: What! you will convince me that God has sent you to bear witness against himself? What sort of proofs will you adduce to convince me that God speaks more surely by your mouth than through the understanding he has given me?
"INSPIRATION: The understanding he has given you! Petty, conceited creature! As if you were the first impious person who had been led astray through his reason corrupted by sin.
"REASON: Man of God, you would not be the first scoundrel who asserts his arrogance as a proof of his mission.
"INSPIRATION: What! do even philosophers call names?
"REASON: Sometimes, when the saints set them the example.
"INSPIRATION: Oh, but I have a right to do it, for I am speaking on God's behalf.
"REASON: You would do well to show your credentials before you make use of your privileges.