Not Heaven itself upon the past has power;
But what has been, has been, and I have had my hour.
Authentication Score 2
Dryden, John. Imitation of Horace. 1685, bk. 3, ode 29, stanza 8.
Dryden, John. "Translations from Horace: Book 3, Ode 29." Selected Poems. Edited by Steven N. Zwicker and David Bywaters. Penguin, 2002, stanza 8.