Professor Diana Eck is Professor of Comparative Religion and Indian Studies at Harvard University, and a member of the Faculty of Divinity. Since 1991, she has been heading a research team at Harvard to explore the new religious diversity of the United States and its meaning for the American Pluralist experiment. See

Professor Eck has identified these 6 categories:

The first is parliamentary style dialogue. She traces this back to the 1893 World’s Parliament of Religions and sees it carried forward by the international interfaith organisations, although…their way of working is now very different from the approach of the World’s Parliament.

Secondly, there is institutional dialogue such as the regular meetings between representatives of the Vatican and The International Jewish Committee for Inter-religious Consultation.

Thirdly, there is theological dialogue, which takes seriously the questions and challenges posed by people of other faiths.

Fourthly, dialogue in community or the dialogue of life is the search for good relationships in ordinary life.

Fifthly, spiritual dialogue is the attempt to learn from other traditions of prayer and meditation.

Lastly, there is inner dialogue, which is ‘that conversation that goes on within ourselves in any other form of dialogue’.

Quoted in Pilgrimage of Hope by Marcus Braybrooke