The Christopher Dawson Centre for Cultural Studies was founded in Australia in 2013 with the goal of raising awareness of the Catholic Intellectual Tradition as an irreplaceable foundation stone of Western Civilisation. The Centre holds a colloquium every year. This single volume contains the full proceedings of the Colloquia for 2018 and 2019. Their themes, respectively, were 'A World without Christianity?' and 'Rebuilding the Walls of Sion'. A wide range of first-rate thinkers and scholars combined to cover that challenging ground with flair, imagination and faithfulness.