<p>Yves Congar was a theological advisor to the preparatory commission for Vatican II, and attended all sessions of the Council (1962-1965) as a theological expert. His daily journal provides a window into the Council's workings and into the development of what would become a series of historical documents and declarations. Theologian Yves Congar op, silenced and exiled in 1955, was in 1960 made a theological advisor to the preparatory commissio...