Henry Scougal (1775). “The life of God in the soul of man. Or, The nature and excellency of the Christian religion. And An account of the beginnings and advances of a spiritual life. 2 letters [by H. Scougal. With a preface by G. Burnet].”, p.66
William Penn (1875). “No Cross, No Crown: A Discourse Showing the Nature and Discipline of the Holy Cross of Christ, and that the Denial of Self, and Daily Bearing of Christ's Cross, is the Alone Way to the Rest and Kingdom of God : to which are Added, the Living and Dying Testimonies of Many Persons of Fame and Learning, Both of Ancient and Modern Times, in Favour of this Treatise : in Two Parts”, p.34
Joseph Butler (1856). “The analogy of religion, natural and revealed, to the constitution and course of nature: to which are added, two brief dissertations : On personal identity, and On the nature of virtue; and fifteen sermons”, p.404