Tolerance has been a very important feature of Christianity from its very roots, despite all the other things that have gone on since. And that, I think, must be the global perspective. Tolerance implies more than saying, "Well, let the Muslims go on with what they are doing." It also means trying to learn something from them and adding that to your own tradition. That is the attitude I think needs to inform the global citizen of the future.

I don't think religions will merge into a great global faith. But I do believe we're moving toward a global ideology that has a place for religion and recognizes the contributions of the different traditions. Hopefully, it will have an overarching view as to how we can work together for the promotion of human values and spirituality.

I've often admired the way many Catholics who have left the priesthood, for example, have nevertheless remained sincere Catholics. They voted with their feet.

People now have their own particular religion - a denomination of one. I suppose it's a part of the new age phenomenon, but it's much wider than that. On the whole, I would say that is healthy. But I think it was always there, secretly.

If you were going to be attracted to a mystical faith which involved the contemplative life, Buddhism would be quite reasonable. But then, not everybody is a budding mystic. In fact, it's pretty certain that very few people are. So another kind of religion, one that was perhaps more pragmatic and service-oriented, might appeal to those others. So I think you have to take your values into account.

Syncretism can be disturbing to people. They have often been taught, "You have to have solid faith and must be sure of your religion," and so on. They fear that they might be threatened by these new developments and mergings. So you get a backlash against it.

A central feature of the ceremonial associated with Mithras was the taurobolium, the ritual slaughter of a bull which commemorated and repeated Mithras' primeval act. The initiate was baptized in its blood, partaking of its life-giving properties. It may be noted that this part of the ceremonial closely resembled the ritual of the cult of Cybele, the Great Mother of Asia Minor, which had been brought to Rome three centuries before Christ.