If we contrast the rapid progress of this mischievous discovery [gunpowder] with the slow and laborious advances of reason, science, and the arts of peace, a philosopher, according to his temper, will laugh or weep at the folly of mankind.

But [the Arabs'] friendship was venal, their faith inconstant, their enmity capricious: it was an easier task to excite than to disarm these roving barbarians; and, in the familiar intercourse of war, they learned to see, and to despise, the splendid weakness both of Rome and of Persia.

Metellus Numidicus, the censor, acknowledged to the Roman people, in a public oration, that had kind nature allowed us to exist without the help of women, we should be delivered from a very troublesome companion; and he could recommend matrimony only as the sacrifice of private pleasure to public duty.

The progress of manufactures and commerce insensibly collects a large multitude within the walls of a city: but these citizens are no longer soldiers; and the arts which adorn and improve the state of civil society, corrupt the habits of the military life.

Hope, the best comfort of our imperfect condition, was not denied to the Roman slave; and if he had any opportunity of rendering himself either useful or agreeable, he might very naturally expect that the diligence and fidelity of a few years would be rewarded with the inestimable gift of freedom.

These idle disputants overlooked the invariable laws of nature, which have connected peace with innocence, plenty with industry, and safety with valour.

His manners were less pure, but his character was equally amiable with that of his father. Twenty-two acknowledged concubines, and a library of sixty-two thousand volumes, attested the variety of his inclinations, and from the productions which he left behind him, it appears that the former as well as the latter were designed for use rather than ostentation.