I have done what I could; let those who can do better.
Slight variant ("quod potui feci") found in James Boswell's An Account of Corsica, there described as "a simple beautiful inscription on the front of Palazzo Tolomei at Siena". Later, found in Henry Baerlein's introduction to his translation of The Diwan of Abul ʿAla by Abul ʿAla Al-Maʿarri (973–1057); also in Anton Chekhov's Three Sisters, act 1. Also in Alfonso Moreno Espinosa, Compendio de Historia Universal, 5. ed. (Cádiz 1888).
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