Giorgio Vasari, Lives of the Most Excellent Painters… (1850)
“ Although Andrea di Domenico Contucci of Monte Sansovino, was born of extremely poor parents, his father being a labourer of the earth, and was himself brought up to guard the flocks, he was nevertheless of so exalted a mind, of intelligence so remarkable, and of so bold a spirit, that, whether in works or discourses relating to the difficulties of architecture and perspective, the period at which he lived could show no genius more truly elevated, no mind more subtle than his own. ”
