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, nor to … - Thomas Jefferson

We are not afraid to follow truth wherever it may lead, nor to tolerate any error so long as reason is left free to combat it.

To begin an affair of that kind now, and carry it on so long a time in form, is by no means a proper plan ... whatever assurances I may give her in private of my esteem for her, or whatever assurances I may ask in return from her, depend on it — they must be kept in private. Necessity will oblige me to proceed in a method which is not generally thought fair; that of treating with a ward before obtaining the approbation of her guardian. I say necessity will oblige me to it, because I never can bear to remain in suspense so long a time. If I am to succeed, the sooner I know it, the less uneasiness I shall have to go through. If I am to meet with a disappointment, the sooner I know it, the more of life I shall have to wear it off: and if I do meet with one, I hope in God, and verily believe; it will be the last.

Yours is one of the few lives precious to mankind, and for the continuance of which every thinking man is solicitous. Bigots may be an exception. What an effort, my dear sir, of bigotry in politics and religion have we gone through! The barbarians really flattered themselves they should be able to bring back the times of Vandalism, when ignorance put everything into the hands of power and priestcraft. All advances in science were proscribed as innovations. They pretended to praise and encourage education, but it was to be the education of our ancestors. We were to look backwards, not forwards, for improvement ... This was the real ground of all the attacks on you. Those who live by mystery & charlatanerie, fearing you would render them useless by simplifying the Christian philosophy — the most sublime and benevolent, but most perverted system that ever shone on man — endeavored to crush your well-earned & well-deserved fame.

To talk of immaterial existences is to talk of nothings. To
say that the human soul, angels, god, are immaterial, is to
say they are nothings, or that there is no god, no angels,
no soul. I cannot reason otherwise .. . without plunging
into the fathomless abyss of dreams and phantasms. I am
satisfied, and sufficiently occupied with the things which
are, without tormenting or troubling myself about
those which may indeed be, but of which I have no
evidence.