Better fare hard with good men than feast it with bad.

Infidelity does not consist in believing, or in disbelieving; it consists in professing to believe what he does not believe. It is impossible to calculate the moral mischief, if I may so express it, that mental lying has produced in society. When a man has so far corrupted and prostituted the chastity of his mind, as to subscribe his professional belief to things he does not believe, he has prepared himself for the commission of every other crime.

... a thirst for power is the natural disease of monarchy.

When it shall be said in any country in the world my poor are happy; neither ignorance nor distress is to be found among them; my jails are empty of prisoners, my streets of beggars; the aged are not in want; the taxes are not oppressive; the rational world is my friend, because I am a friend of its happiness: When these things can be said, there may that country boast its Constitution and its Government

The countries the most famous and the most respected of antiquity are those which distinguished themselves by promoting and patronizing science, and on the contrary those which neglected or discouraged it are universally denominated rude and barbarous.

Government is a necessary evil

I have as little superstition in me as any man living, but my secret opinion has ever been, and still is, that God Almighty will not give up a people to military destruction, or leave them unsupportedly to perish, who have so earnestly and so repeatedly sought to avoid the calamities of war, by every decent method which wisdom could invent. Neither have I so much of the infidel in me, as to suppose that He has relinquished the government of the world, and given us up to the care of devils.