Barbour, Hugh Books

William Penn on Religion and Ethics the Emergence of Liberal Quakerism
1991 0-88946-687-5
Shows in detail how Penn moved from an early Quaker prophetic or radical conception of the divine Light as challenge to every person, into a conception of moral truth as already known in part by everyone. A more complete study than had previously been possible of Penn's relation to the Socinian Unitarians, to the Cambridge Platonists and English humanists, and to some intense debates between Quakers and Anglicans and Baptists in which Penn took a vigorous part.

William Penn on Religion and Ethics. The Emergence of Liberal Quakerism
1991 0-88946-687-4
Shows in detail how Penn moved from an early Quaker prophetic or radical conception of the divine Light as challenge to every person, into a conception of moral truth as already known in part by everyone. A more complete study than had previously been possible of Penn's relation to the Socinian Unitarians, to the Cambridge Platonists and English humanists, and to some intense debates between Quakers and Anglicans and Baptists in which Penn took a vigorous part.