Edmund G. Gardner, The Story of Siena and San Gimignano
“ It is the epoch in which most of Siena’s noblest buildings were reared, the epoch in which its three supreme painters—Duccio di Buoninsegna, Simone Martini, Ambrogio Lorenzetti—for a brief while raised the school of their native city to an equality with that of Florence. Trade flourished, the university prospered; the Republic remained Guelf, though it retained a certain Ghibelline element within its core that kept it from an aggressive policy, and led the more strenuous Florentines to a proverb touching their neighbour: La lupa puttaneggia, “the she-wolf plays the harlot.” ”
