In 1921, a new publication "Christian Life, Faith and Thought" replaced the previous "Christian Doctrine". This publication adopted a new approach of attempting "to state truth, not by formulating it, but by expressing it through the vital personal and corporate experience of Friends". Although much of this publication is in the form of prose drafted by a Revision Committee, this publication began the use of extracts which has subsequently been developed as an acceptable method of expressing the breadth of Quaker theology. In 1959 "Christian Life, Faith and Thought" and "Christian Practice" were revised, followed by a revision in 1967 of "Church Government", and the three were merged into one new volume entitled "Christian faith and practice in the experience of the Society of Friends". The 1959 edition of "Christian Faith and Practice", whilst no longer used in Britain Yearly Meeting, is still a current book of discipline of Canadian Yearly Meeting. "Church Government" and "Christian faith and practice" together made up the Book of Discipline.