Whenever a Christian seeks to discuss matters of ultimate meaning with a non-Christian, the Christian must do a good deal of necessary preparatory work — and I am not talking about learning about the other's beliefs, though that is necessary too.
When we as Catholics seek to explore the “big small world” of numerous religious affiliations, we need to distinguish between our ecumenical explorations and our participation in interreligious activity.
It’s all about truth.
You and I come into this world hungry for significance and meaning — or, more pithily, truth. From our mothers’ arms, we are looking for an understanding of life in which we are fully alive and our life means something. The love of parents gives us the stability we need to keep seeking the source of all meaning, love, and truth.