chapel in Sta. Trinità which now serves as sacristy, a building which was completed by his son, and the exterior of which is adorned with the three crescents, the arms of the Strozzi. The epoch of their greatest brilliancy had not yet begun, but they were approaching it rapidly. As long as the different elements which formed the political parties held the balance of power, peace remained intact at home. The city had never been so rich or so splendid, trade and industry never so flourishing as then; the great burghers had never shown more lively common feeling, or created more beautiful public works, or devoted more helpful interest to science. It was felt that any inconsiderate step, from whatever side it might come, would disturb this peace; but it was this very consciousness of responsibility which enforced prudence. Niccolò da Uzzano used to say that he who summoned a parliament—_i.e._ who would bring about any decided change in the existing state of things—would dig his own grave.[64] Many respected burghers shared his views. It was natural however that an event should at last occur to cause open discontent in the city, and a more hostile position of the parties. The conquest of Pisa had not satisfied Florentine ambition; Lucca, with which Florence had so often quarrelled, remained a thorn in her side. When, a hundred and twenty six years after the time of which we are treating, Giorgio Vasari was employed in painting the great hall in the former palace of the Signoria with representations from the history of Florentine conquests, he was visited by the Lucchese ambassador at his work, and on his question, what he intended to portray on the remaining space, gave the bold answer, ‘The conquest of Lucca.’ This is only an insolent expression of the popular wish. In the Milanese war, Lucca, where, for nearly thirty years, a citizen, Paolo Guinigi, had ruled with almost absolute power, had taken sides for the Visconti, and thereby certainly placed Florence in some danger. Rinaldo degli Albizzi stood at the head of those who demanded that their neighbours should be chastised. But division arose in his own party; Niccolò da Uzzano, Palla Strozzi, Agnolo Pandolfini, and others, opposed him. The attitude of Cosimo de’ Medici was ambiguous. The reproach of having agreed to the plan of war in order to ruin the hopes of his rival, cleaves to him in spite of its being contradicted.[65] The war party, supported by Neri Capponi, one of the most influential burghers, and son of him who had taken Pisa, prevailed. In the Council the opponents were scarcely allowed to speak; a pretext was easily found, and the determination was taken at the end of 1429. Rinaldo degli Albizzi undertook the guidance of affairs as Commissary of the Republic, with extensive authority.