The criminal penalties [for suicide] are the production of a later and darker age.

History is indeed little more than the register of the crimes, follies, and misfortunes of mankind.

The knowledge that is suited to our situation and powers, the whole compass of moral, natural, and mathematical science, was neglected by the new Platonists; whilst they exhausted their strength in the verbal disputes of metaphysics, attempted to explore the secrets of the invisible world, and studied to reconcile Aristotle with Plato, on subjects of which both these philosophers were as ignorant as the rest of mankind.

Actuated by these motives, and apprehensive of disturbing the repose of an unsettled reign, Julian surprised the world by an edict which was not unworthy of a statesman or a philosopher. He extended to all the inhabitants of the Roman world the benefits of a free and equal toleration; and the only hardship which he inflicted on the Christians was to deprive them of the power of tormenting their fellow-subjects, whom they stigmatised with the odious titles of idolaters and heretics.

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

Inclined to peace by his temper and situation, it was easy for [Augustus] to discover that Rome, in her present exalted situation, had much less to hope than to fear from the chance of arms; and that, in the prosecution of remote wars, the undertaking became every day more difficult, the event more doubtful, and the possession more precarious and less beneficial.

It was Rome, on the fifteenth of October, 1764, as I sat musing amidst the ruins of the Capitol, while the barefooted friars were singing vespers in the Temple of Jupiter, that the idea of writing the decline and fall of the city first started to my mind.