Countercult literature usually expresses doctrinal or theological concerns and a missionary or apologetic purpose. These centers provide residential housing for celibate members, and provide doctrinal and theological education. Many of these letters contain questions about church reform and liturgical or doctrinal matters. It seldom enforced that stance by means of heresy trials or other doctrinal discipline. He frequently stresses the need for Reserve in doctrinal and sacramental matters. The influence of those various doctrinal and textual backgrounds is still discernible in Zen. Some were temporal, while others were spiritual or doctrinal. Cardinal Bergoglio became known for personal humility, doctrinal conservatism, and a commitment to social justice. Carr labelled dialectical materialism gibberish, and the labour theory of value doctrinal and derivative. She summoned church leaders from both sides to attempt to solve their doctrinal differences. Later splits were also due to doctrinal differences and geographical separation. Contrary to the claim of doctrinal stability, early Buddhism was a dynamic movement. Lutheran hymnody is well known for its doctrinal, didactic, and musical richness. Did these formations reflect evolving doctrinal ideas? This council was responsible for several practical changes and doctrinal clarifications.