 Complete the following phrase:  On the other hand, he thought that the Church should not obstinately oppose new ideas. He had eagerly entered into the plans of his friends, Lamennais and Lacordaire, and he collaborated with them in the newspaper, LAvenir The Future. He especially distinguished himself in LAvenir by his campaigns in favour of freedom for Ireland and Poland, and for these he received the congratulations of Victor Hugo and Alfred de Vigny. In 1831 he thought of going to Poland and joining the 