A thing of beauty is a joy forever
From John Keats' epic poem, Endymion, 1818:
A thing of beauty is a joy for ever:
Its loveliness increases; it will never
Pass into nothingness; but still will keep
A bower quiet for us, and a sleep
Full of sweet dreams, and health, and quiet breathing.
See also, 'Here lies one whose name was writ in water'.
See also: the List of Proverbs.