In revery he was transported to Tiffauges, where Satan, who had refused so obstinately to show himself, now became incarnate in the unwitting Marshal, to wallow him, vociferating, in the joys of murder.
"For this, basically, is what Satanism is," said Durtal to himself.

"The external semblance of the Demon is a minor matter.

He has no need of exhibiting himself in human or bestial form to attest his presence.

For him to prove himself, it is enough that he choose a domicile in souls which he ulcerates and incites to inexplicable crimes.

Then, he can hold his victims by that hope which he breathes into them, that instead of living in them as he does, and as they don't often know, he will obey evocations, appear to them, and deal out, duly, legally, the advantages he concedes in exchange for certain forfeits.