That argument is multiplied beyond all power of calculation; and to have missed it is the most eminent instance of wilful blindness which the records of human folly can furnish. But there is another refutation lying in an opposite direction, which presses the fathers even more urgently in the rear than this presses them in front; any author posterior to Christianity, who should point to the decay of Oracles, they would claim on their own side. But what would they have said to Cicero,--by what resource of despair would they have parried his authority, when insisting (as many times he does insist), forty and even fifty years before the birth of Christ, on the languishing condition of the Delphic Oracle? What evasion could they imagine here? How could that languor be due to Christianity, which far anticipated the very birth of Christianity? For, as to Cicero, who did not "far anticipate the birth of Christianity." we allege _him_ rather because his work _De Divinatione_ is so readily accessible, and because his testimony on any subject is so full of weight, than because other and much older authorities cannot be produced to the same effect. The Oracles of Greece had lost their vigor and their palmy pride full two centuries before the Christian era. Historical records show this _à posteriori_, whatever were the cause; and the cause, which we will state hereafter, shows it _à priori_, apart from the records. Surely, therefore, Van Dale needed not to have pressed his victory over the helpless fathers so unrelentingly, and after the first ten pages by cases and proofs that are quite needless and _ex abundanti_; simply the survival of any one distinguished Oracle upwards of four centuries _after_ Christ--that is sufficient. But if with this fact we combine the other fact, that all the principal Oracles had already begun to languish, more than two centuries _before_ Christianity, there can be no opening for a whisper of dissent upon any real question between Van Dale and his opponents; namely, both as to the possibility of Christianity coexisting with such forms of error, and the possibility that oracles should be overthrown by merely Pagan, or internal changes. The less plausible, however, that we find this error of the fathers, the more curiosity we naturally feel about the source of that error; and the more so, because Van Dale never turns his eyes in that direction.