"Undoubtedly it is our duty, and for our best good, that we occupy and improve the faculties, with which our creator has endowed us, but so far as prejudice, or prepossession of opinion prevails over our minds, in the same proportion, reason is excluded from our theory or practice. Therefore if we would acquire useful knowledge, we must first divest ourselves of those impediments and sincerely endeavor to search out the truth: and draw our conclusions from reason and just argument, which will never conform to our inclination, interest or fancy; but we must conform to that if we would judge rightly."

“I have generally been denominated a Deist, the reality of which I never disputed, being conscious I am no Christian, except mere infant baptism make me one; and as to being a Deist, I know not, strictly speaking, whether I am one or not, for I have never read their writings; mine will therefore determine the matter; for I have not in the least disguised my sentiments, but have written freely without any conscious knowledge of prejudice for, or against any man, sectary or party whatever; but wish that good sense, truth and virtue may be promoted and flourish in the world, to the detection of delusion, superstition, and false religion; and therefore my errors in the succeeding treatise, which may be rationally pointed out, will be readily rescinded.”

“Who would imagine that the Deity conducts his providence similar to the detestable despots of this world? Oh horrible? most horrible impeachment of Divine Goodness! Rather let us exaltedly suppose that God eternally had the ultimate best good of beings generally and individually in his view, with the reward of the virtuous and the punishment of the vicious, and that no other punishment will ever be inflicted, merely by the divine administration, but that will finally terminate in the best good of the punished, and thereby subserve the great and important ends of the divine government, and be productive of the restoration and felicity of all finite rational nature.”

“In the name of the great Jehovah, and the Continental Congress!”

“An unjust composition never fails to contain error and falsehood. Therefore an unjust connection of ideas is not derived from nature, but from the imperfect composition of man. Misconnection of ideas is the same as misjudging, and has no positive existence, being merely a creature of the imagination; but nature and truth are real and uniform; and the rational mind by reasoning, discerns the uniformity, and is thereby enabled to make a just composition of ideas, which will stand the test of truth. But the fantastical illuminations of the credulous and superstitious part of mankind, proceed from weakness, and as far as they take place in the world subvert the religion of REASON, NATURE and TRUTH.”

“Though "none by searching can find out God, or the Almighty to perfection," yet I am persuaded, that if mankind would dare to exercise their reason as freely on those divine topics as they do in the common concerns of life, they would, in a great measure, rid themselves of their blindness and superstition, gain more exalted ideas of God and their obligations to him and one another, and be proportionally delighted and blessed with the views of his moral government, make better members of society, and acquire many powerful incentives to the practice of morality, which is the last and greatest perfection that human nature is capable of.”

“The idea of a God we infer from our experimental dependence on something superior to ourselves in wisdom, power and goodness, which we call God; our senses discover to us the works of God which we call nature, and which is a manifest demonstration of his invisible essence. Thus it is from the works of nature that we deduce the knowledge of a God, and not because we have, or can have any immediate knowledge of, or revelation from him.”