He who permits himself to tell a lie once, finds it much easier to do it a second and third time, till at length it becomes habitual; he tells lies without attending to it, and truths without the world's believing him. This falsehood of the tongue leads to that of the heart, and in time depraves all its good dispositions.

The lamp of war is kindled here, not to be extinguished but by torrents of blood.

I can never join Calvin in addressing his god. He was indeed an Atheist, which I can never be; or rather his religion was Daemonism. If ever man worshipped a false god, he did.

The attempt of Lavoisier to reform chemical nomenclature is premature. One single experiment may destroy the whole filiation of his terms; and his string of sulphates, sulphites, and sulphures, may have served no end than to have retarded the progress of science by a jargon, from the confusion of which time will be requisite to extricate us.

[All religious sects] dread the advance of science as witches do the approach of daylight; and scowl on the fatal harbinger announcing the subversion of the duperies in which they live.

Debt and revolution are inseparable as cause and effect.

Our particular principles of religion are a subject of accountability to our god alone. I enquire after no man's and trouble none with mine; nor is it given to us in this life to know whether yours or mine, our friend's or our foe's, are exactly the right.