On the one hand he's had religious mania, and on the other, he is fascinated by obscenity.
Either he is a pure servant, washing the feet of Christ, or else he is making obscene drawings of Jesus--action and reaction--and between the two, nothing.

He is really insane.

He wants a pure lily, another girl, with a baby face, on the one hand, and on the other, he MUST have the Pussum, just to defile himself with her.' 'That's what I can't make out,' said Gerald.

'Does he love her, the Pussum, or doesn't he ?' 'He neither does nor doesn't.

She is the harlot, the actual harlot of adultery to him.