The Birth of Venus to Botticelli's Florentine contemporary, and Lorenzo di Medici's court poet, Angelo Poliziano. The iconography of "The Birth of Venus" is similar to a description of a relief of the event in Poliziano's poem the "Stanze per la giostra", commemorating a Medici joust in 1475, which may also have influenced Botticelli, although there are many differences. For example Poliziano talks of multiple Horae and zephyrs. Older writers, following Horne, posited that "his patron Lorenzo di Pierfrancesco asked him to paint a subject illustrating the lines", and that remains a possibility, though one difficult to maintain so confidently today. Another poem by
Sandro Botticelli source of information about his life, even though Vasari twice mixes him up with Francesco Botticini, another Florentine painter of the day. Vasari saw Botticelli as a firm partisan of the anti-Medici faction influenced by Savonarola, while Vasari himself relied heavily on the patronage of the returned Medicis of his own day. Vasari also saw him as an artist who had abandoned his talent in his last years, which offended his high idea of the artistic vocation. He devotes a good part of his text to rather alarming anecdotes of practical jokes by Botticelli. In 1621 a picture-buying agent of