have mentioned them in the course of their respective writings, not one, to my knowledge, has given a correct account of them. It would be tedious to dwell on the errors of Mosheim, or of Formey, or of Hume, or on those to be found in many of the modern periodical[1] publications. It seemed, therefore, from the circumstance of my familiar intercourse with the Quakers, that it devolved upon me particularly to write their history. And I was the more confirmed in my opinion, because, in looking forward, I was never able to foresee the time when any other cause would equally, with that of the slave-trade, bring any other person, who was not of the society, into such habits of friendship with the Quakers, as that he should obtain an equal degree of knowledge concerning them with myself. By this new consideration I was more than ordinarily stimulated, and I began my work. [Footnote 1: I must except Dr. Toulmin's revision of Neal's history of the Puritans. One or two publications have appeared since, written, in a liberal spirit, but they are confined principally to the religious principles of the Quakers.] It is not improbable but some may imagine from the account already given, that this work will be a partial one, or that it will lean, more than it ought to do, in favour of the Quakers. I do not pretend to say, that I shall be utterly able to divest myself of all undue influence, which their attention towards me may have produced, or that I shall be utterly unbiased, when I consider them as fellow-labourers in the work of the abolition of the slave-trade; for if others had put their shoulders to the wheel equally with them on the occasion, one of the greatest causes of human misery, and moral evil, that was ever known in the world, had been long ago annihilated, nor can I conceal, that I have a regard for men, of whom it is a just feature in their character, that, whenever they can be brought to argue upon political subjects, they reason upon principle, and not upon consequences; for if this mode of reasoning had been adopted by others, but particularly by men in exalted stations, policy had given way to moral justice, and there had been but little public wickedness in the world. But though I am confessedly partial to the Quakers on account of their hospitality to me, and on account of the good traits in their moral character, I am not so much so, as to be blind to their imperfections. Quakerism is of itself a pure system, and, if followed closely, will lead towards purity and perfection; but I know well that all, who profess it, are not Quakers. The deviation therefore of their practice from their profession, and their frailties and imperfections, I shall uniformly lay open to them, wherever I believe them to exist. And this I shall do, not because I wish to avoid the charge of partiality, but from a belief, that it is my duty to do it.