From Fulton J. Sheen, PhD:
"In our times, the Church in Germany was tested by nazism, the Church in Russia was tested by communism and the Church elsewhere by worldliness. What makes it so hard is that we are bidden to go into the secular without becoming secular and to be more concerned with all the problems of the world, whether they are ecclesial or not, and yet not become worldly. In days of persecution the sides were more clearly drawn. The Church is 'here'; the persecutors were 'there.' But to hew to that fine line, to be in the Church as 'the sign and salvation of the world' and yet not give up the Church is a real test."