Karl Lehmann — German Clergyman born on May 16, 1936,

Karl Lehmann is a Cardinal of the Catholic Church, Bishop of Mainz and former Chairman of the Conference of the German Bishops, the highest representative post of the Catholic Church in Germany... (wikipedia)

The interest in the supernatural in a very generic sense and in the spiritual is not in itself a factor that helps the communication of the Christian faith.
Common participation in the Eucharist can only be a final outcome of ecumenic dialogue, not the starting point.
Christians who have influence in political life must feel as individuals responsibility in front of their own faith. And the duty of encouraging laws that are not in contradiction with the Commandments comes within the mission of the Church.
There's always the tendency to transform the Church into an ethical agency, and of measuring the Church by the yardstick of social and cultural utility.
For the future, I would suggest avoiding subjects of too vast a scale. It would be useful to make out a list of fundamental questions on the matter to be dealt with, and discuss only those.