Noun
The state or quality of being constant or steadfast; freedom from change; stability; fixedness; immutability; as, the constancy of God in his nature and attributes.
Fixedness or firmness of mind; persevering resolution; especially, firmness of mind under sufferings, steadiness in attachments, or perseverance in enterprise; stability; fidelity.
Source: Webster's dictionaryThe fickleness of the women I love is only equalled by the infernal constancy of the women who love me. George Bernard Shaw
Many men are deeply moved by the mere semblance of suffering in a woman; they take the look of pain for a sign of constancy or of love. Honoré de Balzac
Without constancy there is neither love, friendship, nor virtue in the world. Joseph Addison
The secret of success is constancy of purpose. Benjamin Disraeli
Obstinacy in a bad cause is but constancy in a good. Thomas Browne
The secret of success is constancy of purpose. English Proverb