The process of Church–State separation began 90 years before the 1919 Enabling Act, which gave the Church Assembly legislative powers. The Assembly was conceived not by William Temple's Life and Liberty movement but by aristocratic Conservative politicians, motivated by practical efficiency and High Church principles. With Church lawyers, they dominated it for 40 years. The Church's response to Parliament's rejection of the 1928 Prayer Book, to the Matrimonial Causes Act 1937 and, in the 1950s, to the impossibility of fully articulating in the Church of England's canon law its doctrine on marriage discipline and the seal of the confessional, was united, confident and defiant. The Worship and Doctrine Measure 1974 largely completed efforts to achieve legislative autonomy without disestablishment. The General Synod era has seen changes in both Church and State. The traditions that eclipsed the Church's former ‘Centre-High’ consensus have been less concerned to underline the Church's distinctive identity and doctrines, about which the Synod has been less united. Among MPs, Conservative High Churchmanship and concern for minorities have waned, while expectation that the Church's practice will reflect contemporary social attitudes has increased, placing the long-term survival of the 1919 settlement in question.