There was no other God, religion, or lawful magistracy, than conscience, which teaches all men the precepts of Justice, to do no injury, to live honestly, and give everyone his due.

Compulsion in the literal Sense is maliciously misrepresented, by supposing it authorizes Violences committed against the Truth. The Answer to this; by which it is prov'd, that the literal Sense does in reality authorize the stirring up Persecutions against the Cause of Truth, and that an erroneous Conscience has the same Rights as an enlighten'd Conscience.

Consider, I pray, whether you are not renouncing all shame and sincerity to advance such principles. Because a comet appears in a group of stars which the ancients thought fit to call the Virgin, therefore, shall our women be barren, or have frequent miscarriages, or die old maids. I know of nothing which hangs so ill together! To offer such things in seriousness, shows the greatest contempt of mankind, and the most scandalous lying impunity.

Philosophy can be compared to some powders that are so corrosive that, after they have eaten away the infected flesh of a wound, they then devour the living flesh, rot the bones, and penetrate to the very marrow. Philosophy at first refutes errors. But if it is not stopped at this point, it goes on to attack truths. And when it is left on its own, it goes so far that it no longer knows where it is and can find no stopping place.

No nations are more warlike than those which profess Christianity.

I get up and retire when I wish. I go out if I wish and I do not go out if I do not desire to do so, except for the two days on which I give lectures.

The antiquity and general acceptance of an opinion is not assurance of its truth.