Constancy.
Remember—never to divest the person of your wife of the diversity with which your imagination clothed it while she was your mistress, and be sedulous yourself in the preservation of every attraction as well of the person, as of the heart.
Recollect—that it is vacuity which requires the charm of novelty: keep the soul replete with genuine bliss, and the desire of change will never make head against the power of pure and mutual love. The cooling of the heart towards the object once adored, proceeds in general from the weakness of unoccupied hours, and the inaction of sensibility. Kind attentions mutually kept up, will always endear even indifferent persons to each other; and will not the very name of husband, and wife, lead to those attentions, to those endearments? The flame of love once raised, will burn long if fanned by both the votaries; but will inevitably expire if left only to the care of one.