The only method of learning to bear with dignity the vicissitudes of fortune is to recall the catastrophes of others. - Polybius

For what gives my work its peculiar quality, and what is most remarkable in the present age, is this. Fortune has guided almost all the affairs of the world in one direction and has forced them to incline towards one and the same end; a historian should likewise bring before his readers under one synoptical view the operations by which she has accomplished her general purpose.

We can get some idea of a whole from a part, but never knowledge or exact opinion. Special histories therefore contribute very little to the knowledge of the whole and conviction of its truth. It is only indeed by study of the interconnexion of all the particulars, their resemblances and differences, that we are enabled at least to make a general survey, and thus derive both benefit and pleasure from history.

When a state after having passed with safety through many and great dangers arrives at the higher degree of power, and possesses an entire and undisputed sovereignty, it is manifest that the long continuance of prosperity must give birth to costly and luxurious manners, and that the minds of men will be heated with ambitious contests, and become too eager and aspiring in the pursuit of dignities. And as those evils are continually increased, the desire of power and rule, along with the imagined ignominy of remaining in a subject state, will first begin to work the ruin of the republic; arroagance and luxury will afterwards advance it; and in the end the change will be completed by the people; when the avarice of some is found to injure and oppress them, and the ambition of others swells their vanity, and poisons them with flattering hopes. For then, being inflamed with rage, and following only the dictates of their passions, they no longer will submit to any control, or be contented with an equal share of the administration, in conjunction with their rules; but will draw to themselves the entire sovereignty and supreme direction of all affairs. When this is done, the government will assume indeed the fairest of a ll names, that of a free and popular state; but will in truth be the greatest of all evils, the government of the multitude.