Few men have had to struggle for so many years with circumstances more straitened and precarious than my father; few men have ventured to attack so many or such inveterate prejudices respecting the prevalent religion of his country, or have advanced bolder or more important opinions in opposition to the courtly politics of the powers that be; few have had to encounter more able opponents in his literary career, or have been exposed to such incessant and vindictive obloquy, from men of every description, in return for his unremitting exertions in the cause of truth; yet none have more uniformly proceeded with a single eye, regardless of consequences, to act as his conviction impelled him, and his conscience dictated. His conduct brought with it its own reward, reputation, and respect, from the most eminent of his contemporaries, the affectionate attachment of most valuable friends, and a cheerfulness of disposition arising in part from conscious rectitude which no misfortunes could long repress. But to me it seems, that conscious rectitude alone would hardly of itself have been able to support him under some of the afflictions he was doomed to bear. He had a farther resource, to him never failing and invaluable, a firm persuasion of the benevolence of the Almighty towards all his creatures, and the conviction that every part of his own life, like every part of the whole system, was preordained for the best upon the whole of existence. Had he entertained the gloomy notions of Calvinism, in which he was brought up, this cheering source of contentment and resignation would probably have failed him, and irritation and despondency would have gained an unhappy ascendancy. But by him the deity was not regarded as an avenging tyrant, punishing, for the sake of punishing his weak and imperfect creatures, but as a wise and kind parent, inflicting those corrections only that are necessary to bring our dispositions to the proper temper, and to fit us for the highest state of happiness of which our natures are ultimately capable.

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 and charlntanerie, 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 and well-deserved fame. But it was the Lilliputians upon Gulliver. Our countrymen have recovered from the alarm into which art & industry had thrown them; science & honesty are replaced on their high ground; and you, my dear Sir, as their great apostle, are on it's pinnacle.

That the vegetable creation should restore the air which is spoiled by the animal part of it, looks like a rational system, and seems to be of a piece with the rest. Thus fire purifies water all the world over. It purifies it by distillation, when it raises it in vapours, and lets it fall in rain; and farther still by filtration, when keeping it fluid, it suffers that rain to percolate the earth. We knew before that putrid animal substances were converted into sweet vegetables when mixed with the earth and applied as manure; and now, it seems, that the same putrid substances, mixed with the air, have a similar effect. The strong, thriving state of your mint, in putrid air, seems to show that the air is mended by taking something from it, and not by adding to it. I hope this will give some check to the rage of destroying trees that grow near houses, which has accompanied our late improvements in gardening, from an opinion of their being unwholesome. I am certain, from long observation, that there is nothing unhealthy in the air of woods; for we Americans have everywhere our country habitations in the midst of woods, and no people on earth enjoy better health or are more prolific.

The friends of genuine, and I will add of rational Christianity, have not, however, on the whole, much reason to regret that their enemies have not made these distinctions; since by this means, we have been taught to make them ourselves; so that Christianity is perhaps as much indebted to its enemies, as to its friends, for this important service. In their indiscriminate attacks, whatever has been found to be untenable has been gradually abandoned, and I hope the attack will be continued till nothing of the wretched outworks be left; and then, I doubt not, a safe and impregnable fortress, will be sound in the center, a fortress built upon a rock, against which the gates of death will not prevail.

Mr. Gibbon has much to learn concerning the gospel before he can be properly qualified to write against it. Hitherto he seems to have been acquainted with nothing but the corrupt establishments of what is very improperly called Christianity; whereas it is incumbent upon him to read and study the New Testament for himself. There he will find nothing like Platonism, but doctrines in every respect the reverse of that system of philosophy, which weak and undistinguishing christians afterwards incorporated with it. Had Mr. Gibbon lived in France, Spain, or Italy, he might with the same reason have ranked the doctrine of transubstantiation, and the worship of saints and angels among the essentials of Christianity, as the doctrines of the trinity and of the atonement.

Too many christians have been chargeable with... confounding the Logos of Plato with that of John, and making of it a second person in the trinity, than which no two things can be more different.

I am sorry... to have occasion to admonish Mr. Gibbon, that he should have distinguished better than he has done between christianity itself, and the corruptions of it. ...He should not have taken it for granted, that the doctrine of three persons in one God, or the doctrine of atonement for the sins of all mankind, by the death of one man, were any parts of the christian system; when, if he had read the New Testament for himself, he must have seen the doctrine of the proper unity of God, and also that of his free mercy to the penitent, in almost every page of it.

Indeed, if any man can say, that it is not an interesting question, whether his existence terminate at death, or is to be resumed at a future period, and then to continue for ever, he must be of a low and abject mind. To a rational being, capable of contemplating the wonders of nature, and of investigating the laws of it, and to a being of a social disposition, his existence, and the continuance of his rational faculties, must be an object of unspeakable value to him; and consequently he must ardently wish that christianity... may be true. For to a philosopher, who forms his judgment by what he actually observes, the doctrine of soul, capable of subsisting and acting when the body is in the grave, will never give any satisfaction. To every person, therefore, who is capable of enjoying his existence, the christian doctrine of a resurrection opens a glorious and transporting prospect.

That miracles are things in themselves possible, must be allowed so long as it is evident that there is in nature a power equal to the working of them. And certainly the power, principle, or being, by whatever name it be denominated, which produced the universe, and established the laws of it, is fully equal to any occasional departures from them. The object and use of those miracles on which the christian religion is founded, is also maintained to be consonant to the object and use of the general system of nature, viz. the production of happiness. We have nothing, therefore to do, but to examine, by the known rules of estimating the value of testimony whether there be reason to think that such miracles have been wrought, or whether the evidence of Christianity, or of the christian history, does not stand upon as good ground as that of any other history whatever.

From the fame opinion of a soul distinct from the body came the practice of praying, first for the dead, and then to them with a long train of other absurd opinions, and superstitious practices.