The conversion of one of the leaders of the Oxford Movement, John Henry Newman, to the Roman Catholic Church in 1845 made an enormous impact. Yet Newman's influence has, if anything, increased in the hundred years since his death in 1890. His ideas on the development of doctrine, the role of the laity and papal infallibility found an answering echo at the Second Vatican Council in the 1960s, while his insistence on the limitations of formal reasoning, his defence of liberal values in education and his ecumenical significance as someone who spent half his life as an Anglical and half as a Roman Catholic continue to be widely discussed.