Consistently, [Yves] Congar emphasized the distinction between Tradition and traditionalism. The latter was an unyielding commitment to the past. The former was a living principle of commitment to the Beginning, a process that required creativity, inspiration, and a spirit of openness to the present as well as respect for the past. Two of Congar's works, on reform in the church and on the theology of the laity, proved especially controversial...Congar believed that reform was a vital and necessary dimension of the church. This was rooted in the distinction between the church and the kingdom of God and in the intermingling in the church of both divine and human elements. In light of the church's constant temptation to revert to institutionalism, it was always necessary to allow room for the prophetic voice, issuing from the margins, even though this might mean attending to uncomfortable truths.