Norris was familiar with Roger Barclay and George Keith's expositions of Quakerism, and argued against the view in Reflections upon the Conduct of Human Life. The Quakers had an affinity for the ideal philosophy because they believed the divine light that enlightens the human mind supported their view. Norris delineates the many differences between Quaker thought and his own, but perhaps the main difference is: “The Quakers represent this light within as a sort of Extraordinary Inspiration (when