Rational confidence [is] the just result of knowledge and experience.

In this primitive and abject state [of hunters and gatherers], which ill deserves the name of society, the human brute, without arts or laws, almost without sense or language, is poorly distinguished from the rest of the animal creation.

History should be to the political economist a wellspring of experience and wisdom.

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] operation of the wisest laws is imperfect and precarious. They seldom inspire virtue, they cannot always restrain vice.

[Personal] industry must be faint and languid, which is not excited by the sense of personal interest.

The policy of the emperors and the senate, as far as it concerned religion, was happily seconded by the reflections of the enlightened, and by the habits of the superstitious, part of their subjects. 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. And thus toleration produced not only mutual indulgence, but even religious concord.