Giorgio Vasari, Lives of the Most Excellent Painters… (1850)
“ Joseph, who is leaning on a sack, and has his eyes fixed on an open book. This work is executed in such a manner, the drawing, the grace of the figures, the beauty of colouring, the life-like animation, and the force of the relief, are of such perfection, that the picture proves Andrea to have far excelled and surpassed all the painters who had laboured up to that time; the painting is of a truth so complete, that it speaks plainly for itself, and does not need praise from any other quarter to make it known as a most wonderful and extraordinary work. ”
