Chapter VII, Footnote #11
The more remote a connexion of this sort is, of course the more obscure. It will often happen that a connexion, the idea of which would at first sight appear extravagant and absurd, shall be rendered highly probable, and indeed indisputable, merely by the suggestion of a few intermediate circumstances.
At Rome, 390 years before the Christian era, a goose sets up a cackling: two thousand years afterwards a king of France is murdered. To consider these two events, and nothing more, what can appear more extravagant than the notion that the former of them should have had any influence on the production of the latter? Fill up the gap, bring to mind a few intermediate circumstances, and nothing can appear more probable. It was the cackling of a parcel of geese, at the time the Gauls had surprised the Capitol, that saved the Roman commonwealth: had it not been for the ascendancy that commonwealth acquired afterwards over most of the nations of Europe, amongst others over France, the Christian religion, humanly speaking, could not have established itself in the manner it did in that country. Grant then, that such a man as Henry IV. would have existed, no man, however, would have had those motives, by which Ravaillac, misled by a mischievous notion concerning the dictates of that religion, was prompted to assassinate him.