The main attack of both of these men was directed against the miracles of the Bible. It was very evident that, the Divine authority of the Bible being overthrown, the whole structure of the Christian religion and morality must pass away. Mr. Parton, in his admirable Life of Franklin, says,

"Any one who will turn over an edition of Shaftsbury, and try to read it with the mind of this merry and receptive printer's boy, will perceive how entirely captivating it must have been to him. The raillery that was always the raillery of a gentleman; the irony so delicate as really to deceive some men who passed for acute; the fine urbanity that pervades even the passages called severe; the genuine reverence of the author for virtue; the spectacle revealed of a man uniting in himself all that is good in sense, with all that is agreeable in the man of the world,--how pleasing it must all have been to our inky apprentice as he munched his noon-day crust."

Benjamin Franklin, A Picture of the Struggles of Our Infant Nation One Hundred Years Ago — Part 17

The practical creed of Collins and Shaftsbury, so far as it can be gleaned from the obscurity of their brilliant pages, consisted in the entire renunciation of all that is deemed the spirituality of the Christian creed, and the simple enforcement of the ordinary principles of morality in man's intercourse with his brother man. In substance they said,

Benjamin Franklin, A Picture of the Struggles of Our Infant Nation One Hundred Years Ago — Part 17

"Be truthful and honest. Do not openly oppose the institutions of Christianity, for that will render you obnoxious to your neighbors. Conform to the ordinary usages of the society in the midst of which you move; and as to creeds, let them alone as unworthy of a moment's thought."

Benjamin Franklin, A Picture of the Struggles of Our Infant Nation One Hundred Years Ago — Part 17

Franklin, at sixteen years of age, became a thorough convert to these views. He was virtually without any God. He had no rule of life but his own instincts; but those instincts were of a high order, emboldening his character and restraining him from all vulgar vice. Thus he wandered for many years; though there are many indications of an occasionally troubled mind, and though he at times struggled with great eagerness to obtain a higher state of moral perfection, he certainly never developed the character of a warm-hearted and devoted follower of Jesus.[4]

[Footnote 4: "For some years he wandered in heathenish darkness. He forsook the safe and good though narrow way of his forefathers, and of his father and mother, and his gentle Uncle Benjamin, without finding better and larger ways of his own. He was in danger of becoming a castaway or a commonplace successful man of the world. He found in due time, after many trials, and much suffering and many grievous errors, that the soul of a man does not thrive upon negations, and that, in very truth a man must _believe_ in order that he may be saved."--_Parton's Life of Franklin, Vol. I, p. 71._]