Fidelity, n.: A virtue peculiar to those who are about to be betrayed.

Constancy … that small change of love, which people exact so rigidly, receive in such conterfeit coin, and repay in baser metal.

Nothing is more noble, nothing more venerable than fidelity. Faithfulness and truth are the most sacred excellences and endowments of the human mind.

I have been faithful to thee, Cynara, in my fashion.

We only part to meet again. Change, as ye list, ye winds: my heart shall be The faithful compass that still points to thee.

Matrimonial devotion doesn’t seem to suit her notion.

An ideal wife is one who remains faithful to you but tries to be just as charming as if she weren’t.

Not observation of a duty but liberty itself is the pledge that assures fidelity.

Constancy is the complement of all other human virtues.

Fidelity is seven-tenths of business success.