Dr Shaw puts forward two points:
- Engagement with Islam (whether with a view to mutual understanding or evangelisation) is facilitated by common ground with Islam. The more common ground one has, whether cultural or theological, the better one can talk productively with people of other religions.
- There is a great deal more common ground between Islam and that aspect of Catholicism exemplified by the Traditional liturgy, than there is between Islam and what is manifested by the reformed liturgy. In this, the Traditional Catholics are close to the situation of the ancient Christian churches in majority-Muslim countries.