Giorgio Vasari, Lives of the Most Excellent Painters… (1850)
“ Buonarroto, who saw whence the defect proceeded and knew the want of judgment of Giuliano, instantly sat down again laughing, and Bugiardini, having looked many times, now at Michelagnolo and now at the portrait, finally rose to his feet and exclaimed, “To me it appears that the thing is as I have drawn it, and that what I have done is true to the life.” “In that case it must be a defect of nature,” replied Michelagnolo, “go on, and do not spare either pencils or art.” ”
