“…If the belief of errors not morally bad did no mischief, it would make no part of the moral duty of man to oppose and remove them. There was no moral ill in believing the earth was flat like a trencher, any more than there was moral virtue in believing that it was round like a globe….
But when a system of religion is made to grow out of a supposed system of creation that is not true, and to unite itself therewith in a manner almost inseparable therefrom, the case assumes an entirely different ground. It is then that errors not morally bad become fraught with the same mischiefs as if they were.
It is then that the truth, though otherwise indifferent itself, becomes an essential by becoming the criterion that either confirms by corresponding evidence, or denies by contradictory evidence, the reality of the religion itself. In this view of the case, it is the moral duty of man to obtain every possible evidence that the structure of the heavens, or any other part of creation affords, with respect to systems of religion.
But this, the supporters or partisans of the Christian system, as if dreading the result, incessantly opposed, and not only rejected the sciences, but persecuted the professors. Had Newton or Descartes lived three or four hundred years ago, and pursued their studies as they did, it is most probable they would not have lived to finish them; …
***Later times have laid all the blame upon the Goths and Vandals; but, however unwilling the partisans of the Christian system may be to believe or to acknowledge it, it is nevertheless true that the age of ignorance commenced with the Christian system. There was more knowledge in the world before that period than for many centuries afterwards; and as to religious knowledge, the Christian system, as already said was only another species of mythology, and the mythology to which it succeeded was a corruption of an ancient system of theism.…
Had the progression of knowledge gone on proportionably with that stock that before existed, that chasm would have been filled up with characters rising superior in knowledge to each other; and those ancients we now so much admire would have appeared respectably in the background of the scene. But the Christian system laid all waste; and if we take our stand about the beginning of the sixteenth century, we look back through that long chasm to the times of the ancients, as over a vast sandy desert, in which not a shrub appears to intercept the vision to the fertile hills beyond. …the fact is too well established to be denied.
The event that served more than any other to break the first link in this long chain of despotic ignorance is that known by the name of the Reformation by Luther. From that time, though it does not appear to have made any part of the intention of Luther, or of those who are called reformers, the sciences began to revive, and liberality, their natural associate, began to appear. This was the only public good the Reformation did; for with respect to religious good, it might as well not have taken place. The mythology still continued the same, and a multiplicity of National Popes grew out of the downfall of the Pope of Christendom.
Thomas Paine, Age Of Reason, P 25-8.