Giorgio Vasari, Lives of the Most Excellent Painters… (1850)
“ Pietro Perugino certainly proved himself well acquainted with the management of colours,'in fresco as well as in oil, insomuch, that the most able artists are largely indebted to him for the knowledge to be obtained by means of his works, more especially as regards the lights. In the church of Santa Croce, in the same city, this master painted a Madonna mourning over the body of Christ, which she sustains on her bosom; in this picture there are two figures, the sight of which awakens astonishment, not so much indeed for their excellence, as for their freshness ”
