Rome (ENI). A new centre in Europe have marked the 50th anniversary of the European Union, many urging that the grouping should make explicit the role played by Christianity in the development of the continent. "Christianity contributed to build up the historical, moral and cultural values of Europe, values which are the soul of the continent," Pope Benedict XVI told delegates attending a congress in Rome. "Is it not a surprise that contemporary Europe, although it wishes to present itself as a community of values, seems more and more to contest the existence of universal absolute values?"