Thomas Paine said this quote

Later times have laid all the blame upon the Goths and Vandals, but, however unwilling the partizans 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.; 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.