All the passions are nothing else than different degrees of heat and cold of the blood.

Jealousy is nothing more than a fear of abandonment

Virtues lose themselves in self-interest, as rivers in the sea.

It is easier to fall in love when you are out of it than to get out of it when you are in.

Loyalty is in most people only a ruse used by self-interest to attract confidence.

When a man must force himself to be faithful in his love, this is hardly better than unfaithfulness.

True love is like ghosts, which everyone talks about and few have seen.