Wilbur, John. A Narrative and Exposition of the Late Proceedings of New England Yearly Meeting, With Some of its Subordinate Meetings & Their committees, in Relation to the Doctrinal Controversy Now Existing in the Society of Friends: Prefaced by a Concise View of the Church, Showing the Occasion of its Apostacy, both Under the Former and Present Dispensations, With an Appendix. Edited from Record Kept, From Time to Time, of Those Proceedings, and Interspersed With Occasional Remarks and Observations. Addressed to the Members of the Said Yearly Meeting. New York: Piercy & Reed, Printers, 1854, pages 277-325.

Contrast the above with

Robert Barclay (Apol. Prop. II. p. 17): "Seeing no man knoweth the Father but the Son, and he to whom the Son revealeth Him; and seeing the revelation of the Son is in and by the Spirit; therefore the testimony of the Spirit is that alone by which the true knowledge of God hath been, is, and can be only revealed."
(p. 20.) "For the better understanding, then, of this proposition, we do distinguish betwixt the certain {p. 280} knowledge of God, and the uncertain; betwixt the spiritual knowledge and the literal; the saving heart knowledge, and the soaring head knowledge. The last, we confess, may be divers ways obtained; but the first, by no other way than the inward immediate manifestation and revelation of God's Spirit, shining in and upon the heart, enlightening and opening the understanding. None have any true ground to believe they have attained it, who have it not by this revelation of God's Spirit."
(p. 26.) "I would, however, not be understood, as if hereby I excluded those other means of knowledge from any use or service to man; it is far from me so to judge, as, concerning the Scriptures, in the next proposition will more plainly appeal. The question is not, what may be profitable or helpful, but what is absolutely necessary. Many things may contribute to further a work, which yet are not the main thing that makes the work go on. The sum, then, of what is said, amounts to this: that where the true inward knowledge of God is, through the revelation of his Spirit, there is all; neither is there an absolute necessity of any other. But where the best, highest, and most profound knowledge is, without this, there is nothing, as to tile obtaining the great end of salvation."
William Penn (Rise and Progress, p. 27): "I have already touched upon their fundamental principle, which is as the corner stone of their fabric; and indeed, to speak eminently and properly, their characteristic, or main distinguishing point or principle, viz: the light of Christ within, as God's gift for man's salvation. This, I say, is as the root of the goodly tree of doctrines that grew and branched out from it, which I shall now mention," &c. &c.
George Fox (Journal, Leeds edit. Vol. I. p. 92): "My desires after the Lord grew stronger, and zeal in the pure knowledge of God, and of Christ alone, without the help of any man, book or writing. For though I read the Scriptures that spoke of Christ and of God; {p. 281} yet I knew him not, but by revelation, as He who hath the key did open, and as the Father of Life drew me to his Son by his Spirit."
William Penn (Pref. to Prim. Christ. Revived): "By this short ensuing treatise, thou wilt perceive the subject of it, viz: the light of Christ in man, as the manifestation of God's love for man's happiness; now, forasmuch as this is the peculiar testimony and characteristic of the people called Quakers; their great fundamental in religion; that by which their have been disticguished from other professors of Christianity in their time, and to which they refer all people,about faith, worship, and practice, both in their ministry and writings; that as the fingers shoot out of the hand, and the branches from the body of the tree, so true religion, in all the parts and articles of it, springs from this divine principle in man.