This institution will be based on the illimitable freedom of the human mind. For here we are not afraid to follow truth wherever it may lead, not tolerate error as long as reason is left free to combat it.

Had the doctrines of Jesus been preached always as pure as they came from his lips, the whole civilized world would now have been Christians.

The clergy ... believe that any portion of power confided to me [as President] will be exerted in opposition to their schemes. And they believe rightly: for I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. But this is all they have to fear from me: and enough, too, in their opinion.

The further the departure from direct and constant control by the citizens, the less has the government of the ingredient of republicanism.

When I hear another express an opinion which is not mine, I say to myself, he has a right to his opinion, as I to mine. Why should I question it? His error does me no injury, and shall I become a Don Quixote, to bring all men by force of argument to one opinion? ...Be a listener only, keep within yourself, and endeavor to establish with yourself the habit of silence, especially in politics.

On every question of construction (of the Constitution) let us carry ourselves back to the time when the Constitution was adopted, recollect the spirit of the debates, and instead of trying what meaning may be squeezed out of the text, or invented against it, conform to the probable one in which it was passed.

My opinion is that there would never have been an infidel, if there had never been a priest. The artificial structures they have built on the purest of all moral systems, for the purpose of deriving from it pence and power, revolts those who think for themselves, and who read in that system only what is really there.