Every sect, in whatever sphere, is the rallying-point of doubt and error. Scotist, Thomist, Realist, Nominalist, Papist, Calvinist, Molinist, Jansenist, are only pseudonyms.
There are no sects in geometry; one does not speak of a Euclidian, an Archimedean.
When the truth is evident, it is impossible for parties and factions to arise. Never has there been a dispute as to whether there is daylight at noon.
The branch of astronomy which determines the course of the stars and the return of eclipses being once known, there is no more dispute among astronomers.
In England one does not say--"I am a Newtonian, a Lockian, a Halleyan." Why? Those who have read cannot refuse their assent to the truths taught by these three great men. The more Newton is revered, the less do people style themselves Newtonians; this word supposes that there are anti-Newtonians in England. Maybe we still have a few Cartesians in France; that is solely because Descartes' system is a tissue of erroneous and ridiculous imaginings.
It is likewise with the small number of truths of fact which are well established. The records of the Tower of London having been authentically gathered by Rymer, there are no Rymerians, because it occurs to no one to combat this collection. In it one finds neither contradictions, absurdities nor prodigies; nothing which revolts the reason, nothing, consequently, which sectarians strive to maintain or upset by absurd arguments. Everyone agrees, therefore, that Rymer's records are worthy of belief.
You are Mohammedan, therefore there are people who are not, therefore you might well be wrong.
What would be the true religion if Christianity did not exist? the religion in which there were no sects; the religion in which all minds were necessarily in agreement.
Well, to what dogma do all minds agree? to the worship of a God and to integrity. All the philosophers of the world who have had a religion have said in all time--"There is a God, and one must be just." There, then, is the universal religion established in all time and throughout mankind.
The point in which they all agree is therefore true, and the systems through which they differ are therefore false.
"My sect is the best," says a Brahmin to me. But, my friend, if your sect is good, it is necessary; for if it were not absolutely necessary you would admit to me that it was useless: if it is absolutely necessary, it is for all men; how then can it be that all men have not what is absolutely necessary to them? How is it possible for the rest of the world to laugh at you and your Brahma?
When Zarathustra, Hermes, Orpheus, Minos and all the great men say--"Let us worship God, and let us be just," nobody laughs; but everyone hisses the man who claims that one cannot please God unless when one dies one is holding a cow's tail, and the man who wants one to have the end of one's prepuce cut off, and the man who consecrates crocodiles and onions, and the man who attaches eternal salvation to the dead men's bones one carries under one's shirt, or to a plenary indulgence which one buys at Rome for two and a half sous.
Whence comes this universal competition in hisses and derision from one end of the world to the other? It is clear that the things at which everyone sneers are not of a very evident truth. What shall we say of one of Sejan's secretaries who dedicated to Petronius a bombastic book entitled--"The Truths of the Sibylline Oracles, Proved by the Facts"?
This secretary proves to you first that it was necessary for God to send on earth several sibyls one after the other; for He had no other means of teaching mankind. It is demonstrated that God spoke to these sibyls, for the word sibyl signifies God's counsel. They had to live a long time, for it is the very least that persons to whom God speaks should have this privilege. They were twelve in number, for this number is sacred. They had certainly predicted all the events in the world, for Tarquinius Superbus bought three of their Books from an old woman for a hundred crowns. "What incredulous fellow," adds the secretary, "will dare deny all these evident facts which happened in a corner before the whole world? Who can deny the fulfilment of their prophecies? Has not Virgil himself quoted the predictions of the sibyls? If we have not the first examples of the Sibylline Books, written at a time when people did not know how to read or write, have we not authentic copies? Impiety must be silent before such proofs." Thus did Houttevillus speak to Sejan. He hoped to have a position as augur which would be worth an income of fifty thousand francs, and he had nothing.
"What my sect teaches is obscure, I admit it," says a fanatic; "and it is because of this obscurity that it must be believed; for the sect itself says it is full of obscurities. My sect is extravagant, therefore it is divine; for how should what appears so mad have been embraced by so many peoples, if it were not divine?" It is precisely like the Alcoran which the Sonnites say has an angel's face and an animal's snout; be not scandalized by the animal's snout, and worship the angel's face. Thus speaks this insensate fellow. But a fanatic of another sect answers--"It is you who are the animal, and I who am the angel."
Well, who shall judge the suit? who shall decide between these two fanatics? The reasonable, impartial man learned in a knowledge that is not that of words; the man free from prejudice and lover of truth and justice; in short, the man who is not the foolish animal, and who does not think he is the angel.
Sect and error are synonymous. You are Peripatetic and I Platonician; we are therefore both wrong; for you combat Plato only because his fantasies have revolted you, and I am alienated from Aristotle only because it seems to me that he does not know what he is talking about. If one or the other had demonstrated the truth, there would be a sect no longer. To declare oneself for the opinion of the one or the other is to take sides in a civil war. There are no sects in mathematics, in experimental physics. A man who examines the relations between a cone and a sphere is not of the sect of Archimedes: he who sees that the square of the hypotenuse of a right-angled triangle is equal to the square of the two other sides is not of the sect of Pythagoras.
When you say that the blood circulates, that the air is heavy, that the sun's rays are pencils of seven refrangible rays, you are not either of the sect of Harvey, or the sect of Torricelli, or the sect of Newton; you agree merely with the truth demonstrated by them, and the entire universe will ever be of your opinion.
This is the character of truth; it is of all time; it is for all men; it has only to show itself to be recognized; one cannot argue against it. A long dispute signifies--"Both parties are wrong."
 Reference to the Abbé Houtteville, author of a book entitled--"The Truth of the Christian Religion, Proved by the Facts."
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