But this inestimable privilege was soon violated: with the knowledge of truth the emperor imbibed the maxims of persecution; and the sects which dissented from the catholic church were afflicted and oppressed by the triumph of Christianity. Constantine easily believed that the heretics, who presumed to dispute his opinions or to oppose his commands, were guilty of the most absurd and criminal obstinacy; and that a seasonable application of moderate severities might save those unhappy men from the danger of an everlasting condemnation.

Whatever evils either reason or declamation have imputed to extensive empire, the power of Rome was attended with some beneficial consequences to mankind; and the same freedom of intercourse which extended the vices, diffused likewise the improvements of social life.

Such was the unhappy condition of the Roman emperors, that, whatever might be their conduct, their fate was commonly the same. A life of pleasure or virtue, of severity or mildness, of indolence or glory, alike led to an untimely grave; and almost every reign is closed by the same disgusting repetition of treason and murder.

Our ignorance is God; what we know is science.

Where the subject lies so far beyond our reach, the difference between the highest and the lowest of human understandings may indeed be calculated as infinitely small; yet the degree of weakness may perhaps be measured by the degree of obstinacy and dogmatic confidence.

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.

The distinctions of personal merit and influence, so conspicuous in a republic, so feeble and obscure under a monarchy, were abolished by the despotism of the emperors; who substituted in their room a severe subordination of rank and office, from the titled slaves who were seated on the steps of the throne, to the meanest instruments of arbitrary power.