In the purer ages of the commonwealth, the use of arms was reserved for those ranks of citizens who had a country to love, a property to defend, and some share in enacting those laws which it was their interest, as well as duty, to maintain. But in proportion as the public freedom was lost in extent of conquest, war was gradually improved into an art, and degraded into a trade.

The various modes of worship which prevailed in the Roman world were all considered by the people as equally true; by the philosopher as equally false; and by the magistrate as equally useful.

The fabric of a mighty state, which has been reared by the labours of successive ages, could not be overturned by the misfortune of a single day, if the fatal power of the imagination did not exaggerate the real measure of the calamity.

It was [Totila's] constant theme, that national vice and ruin are inseparably connected; that victory is the fruit of moral as well as military virtue; and that the prince, and even the people, are responsible for the crimes which they neglect to punish.

The most successful of the Tartar princes assumed the military command, to which he was entitled by the superiority either of merit or of power. He was raised to the throne by the acclamations of his equals; and the title of Khan expresses, in the language of the North of Asia, the full extent of the regal dignity. The right of hereditary succession was long confined to the blood of the founder of the monarchy; and at this moment all the Khans, who reign from Crimea to the wall of China, are the lineal descendants of the renowned Zingis.

The inactivity of a conqueror betrays the loss of strength and blood . . .

The laws of war, that restrain the exercise of national rapine and murder, are founded on two principles of substantial interest: the knowledge of the permanent benefits which may be obtained by a moderate use of conquest, and a just apprehension lest the desolation which we inflict on the enemy's country may be retaliated on our own. But these considerations of hope and fear are almost unknown in the pastoral state of nations.