It was from these glittering, luxurious scenes that one of Siena's proudest nobles, Bernardo Tolomei, fled to the desert, in 1313, to found the great convent of Monte Oliveto Maggiore, and to return to the city in 1348 with his white-robed companions, to lay down his life for his fellow-countrymen during the pestilence. Until the advent of that terrible pestilence of 1348, the epoch of the supremacy of the Nine is the brightest in the history of Siena. "In that time," wrote Fra Filippo Agazzari, a few years later, "the city of Siena was in such great peace, and in such great abundance of every earthly good, that almost every feast day innumerable weddings of young women were celebrated in the city."[11] 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." In 1303 the Sienese purchased Talamone--which they fondly hoped to make into a valuable sea-port whereby they might become a great maritime power to rival Genoa or even Venice--from the Abbot of San Salvadore. Henceforth, to their mocking neighbours, they became the "vain folk that hopes in Talamone," upon which they spent enormous sums of money with no result, owing to the unhealthiness of the situation and the impossibility of keeping the harbour clear. They joined the Italian league against Henry of Luxemburg, sent men and money to the defence of Brescia, and, by their prompt assistance to the Florentines, helped in forcing the Emperor to raise the siege of Florence in 1312, when his army wasted their contado. A little later, when Uguccione della Faggiuola was upholding the imperial cause, 400 Sienese cavalry and 3000 infantry were in the Guelf army that was annihilated at Montecatini in 1315. But in 1326, when Duke Charles of Calabria came to Siena on his way to Florence, and demanded the lordship of the former city as well, they rose in arms against him, barricaded the streets with chains, and forced the proud Guelf prince to accept their terms. The Duke of Athens, in 1343, having made himself tyrant of Florence, attempted to get Siena into his hands, by stirring up the nobles against the Nine; the Nine retaliated by arranging the conspiracy that caused his overthrow and his expulsion from Florence. "For three days," writes Bindino da Travale, "the _balzana_ floated over the Tower of the Commune of Florence, alone, without any other banner." [Illustration: A Street in Siena]