5. If the comparison I use be thought too large, and the rule be put only as to the greater part of the Learned that are in Europe, yet it will hold good, that the greatest part of the Learned are not to be adhered to, because of their numerousness; nor that the rest are to be rejected, because of their paucity. For it is known sufficiently, that a Bishop of Mentz was censured and excommunicated for holding that there were Antipodes, by some hundreds of those that were accounted learned and wise: so that it is plain, that the greater number may be in the errour, and those that are few be in the right. And did not the greatest number of the Physicians in Europe altogether adhere to the Doctrine of Galen, though now in Germany, France, England, and many other Nations the most have exploded it? And was not the Aristotelian Philosophy embraced by the greatest part of all the Learned in Europe? And have not the Cartesians and others sufficiently now manifested the errours and imperfections of it, and especially the endeavors of the honourable and learned Members of the Royal Society here in England, and the like Societies beyond Seas by their continual labour and vigilancy about Experiments, made the errours and defects of it obvious to all inquisitive persons? So that multitude, as multitude, ought not to lead or sway us, but truth it self.
6. If to all this we add, that truth in it self is but one; for unum and verum are convertibles, and that errour or falsity is various and manifold, and that there may be a thousand errours about one particular thing, and yet but one truth; it will necessarily follow, the greatest number holding an opinion, cannot be safe to be followed because of their multitude, and the reason is errour, is manifold, truth but one.
Rule 2.
2. It is not safe nor rational to receive or adhere to an opinion because of its Antiquity; nor to reject one because of its Novelty. And this we shall make good from and by these following reasons.
1. Because there is no opinion (especially about created things) but it hath once been new; and if an opinion should be rejected meerly because of novelty, then it will follow, that either all opinions might have been rejected for that very reason, or that novelty is no safe ground only, why an opinion should be opposed or rejected.
2. Antiquity and Novelty are but relations quoad nostrum intellectum, non quoad naturam; for the truth, as it is fundamentally in things extra intellectum, cannot be accounted either old or new. And an opinion, when first found out and divulged, is as much a truth then, as when the current of hundreds or thousands of years have passed since its discovery. For it was no less a truth, when in the infancy of Philosophy it was holden, that there was generation and corruption in Nature, in respect of Individuals, than it is now: so little doth Time, Antiquity, or Novelty alter, change, confirm, or overthrow truth; for veritas est temporis filia, in regard of its discovery to us or by us, who must draw it forth è puteo Democriti. And the existence of the West-Indies was as well before the discovery made by Columbus as since, and our ignorance of it did not impeach the truth of its being, neither did the novelty of its discovery make it less verity, nor the years since make it more: so that we ought simply to examine, whether an opinion be possible or impossible, probable or improbable, true or false; and if it be false, we ought to reject it, though it seem never so venerable by the white hairs of Antiquity; nor ought we to refuse it, though it seem never so young, or near its birth. For as St. Cyprian said: Error vetustatis est vetustas erroris.
Advanc. of Learn. l. 1. c. 5.
3. In regard of Natural Philosophy, and the knowledge of the properties of created things, and the knowledge of them, we preposterously reckon former Ages, and the men that lived in them, the Ancients; which in regard of production and generation of the Individuals of their own Species are so; but in respect of knowledge and experience, this Age is to be accounted the most ancient. For as the learned Lord Bacon saith: “Indeed to speak truly, Antiquitas seculi, juventus mundi,” Antiquity of time is the youth of the World. Certainly our times are the ancient times, when the World is now ancient, and not those which we count ancient, ordine retrogrado, by a computation backward from our own times; and yet so much credit hath been given to old Authors, as to invest them with the power of Dictators, that their words should stand, rather than admit them as Consuls to give advice.
Rule 3.
3. It is not safe nor rational to resolve to stick to our old imbibed opinions, nor wilfully to reject those that seem new, except we be fully satisfied, from indubitable grounds, that what we account old is certainly true, and what we reckon to be new is undoubtedly false. And this will appear to be a truth, partly from the weakness of their arguments, that seem utterly to condemn all recession from ancient opinions, as vain, foolish, and unnecessary; as also from other positive reasons.