He seemed resolved to shake and combat both her religious principles and her views of the family state.

He tried to undermine her faith in Christianity as a rule of life by argument and by ridicule.

He set before her the Continental idea of the liberty of marriage; it being a simple partnership of friendship and property, the parties to which were allowed by one another to pursue their own separate individual tastes.

He told her, that, as he could not be expected to confine himself to her, neither should he expect or wish that she should confine herself to him; that she was young and pretty, and could have her lovers, and he should never object; and that she must allow him the same freedom.
She said that she did not comprehend to what this was tending till after they came to London, and his sister came to stay with them.
At what precise time the idea of an improper connection between her husband and his sister was first forced upon her, she did not say; but she told me how it was done.

She said that one night, in her presence, he treated his sister with a liberty which both shocked and astonished her.