A comedic illustration made in 1495 for a poem by Gaspare Visconti may depict Leonardo as a court lawyer with allusions to his alleged homosexual proclivities. Michael White points out that willingness to discuss aspects of Leonardo's sexual identity has varied according to contemporary attitudes. His near-contemporary biographer Vasari makes no reference to Leonardo's sexuality whatsoever. In the 20th century, biographers made explicit references to a probability that Leonardo was homosexual, though others concluded that for much of his life he was celibate.