being in joint command of the Florentine armies, after defeating Bartolommeo d’Alviano at San Vincenzo, proceeded to invest Pisa. For this enterprise was resolved on by the people in consequence of the brave promises of Messer Ercole; and though many wise citizens disapproved of it, they could do nothing to prevent it, being carried away by the popular will, which took its rise in the assurances of their captain.
I say, then, that there is no readier way to bring about the ruin of a republic, when the power is in the hands of the people, than to suggest daring courses for their adoption. For wherever the people have a voice, such proposals will always be well received, nor will those persons who are opposed to them be able to apply any remedy.
And as this occasions the ruin of states, it likewise, and even more frequently, occasions the private ruin of those to whom the execution of these proposals is committed; because the people anticipating victory, do not when there comes defeat ascribe it to the short means or ill fortune of the commander, but to his cowardice and incapacity; and commonly either put him to death, or imprison or banish him; as was done in the case of numberless Carthaginian generals and of many Athenian, no successes they might previously have obtained availing them anything; for all past services are cancelled by a present loss.
And so it happened with our Antonio Giacomini, who not succeeding as the people had expected, and as he had promised, in taking Pisa, fell into such discredit with the people, that notwithstanding his countless past services, his life was spared rather by the compassion of those in authority than through any movement of the citizens in his behalf.