1985 «Indisch-Christliche Theologie», Lecture at the University of T?bingen, Germany
1986 «Inter-religious Dialogue and the Academic Study of Religion », Address to the International Seminar on Inter-faith Dialogue for National Integration and Human Solidarity held at Madras Christian College, Tambaram / Madras, India
1986« Indische Christologie: geschichtlicher Hintergrund, neue Vorschl?ge, offene Probleme », Special lecture at the University of W?rzburg, Germany
1986 «Die Begegnung des Christentums mit dem Hinduismus: Reflexionen ?ber pers?nliche Erfahrungen, 1961-86», Joachim Wach Lecture, University of Marburg, Germany
1987 «Physics and Reality», Address to the Physics Department of the University of Calgary
1987 Contribution to a panel on «The Cosmic Sense: Ritual and Contemporary Life »organized by the Museum of Man and Nature in Winnipeg, MB
1987« The Future of Hindu-Christian Dialogue », contribution to a conference on« Hindu-Christian »Dialogue at Nakoda Institute, Morley, Alberta, organized by the Calgary Institute for the Humanities
1987 «Eine Welt der Gef?hle. Rupa Goswami's Bhaktirasamrtasindhu », Address to Deutsch-Indische Gesellschaft, Darmstadt, Germany
1987« Agape und Bhakti », Lectures at University of Frankfurt / Main, Heidelberg and Marburg.
1989 «Truth and Tolerance in Contemporary Hinduism», contribution to a Conference to commemorate the tri-centenary of the Act of Toleration 1689, McGill University, Montreal
1989 «The impact of inter-religious dialogue», invited presentation to American Academy of Religion, Annual Meeting, Anaheim, California
1990 «Possible Contributions of Asian Traditions to Contemporary Environmental Ethics »invited presentation to Humanities Association of Canada Meeting, Victoria BC
1990« Advaita Vedanta as Religious Tradition »invited presentation at the International Conference on the Occasion of the 1200th anniversary of Sankara's Birth, at Miami University, Oxford, Ohio, USA
1990 «Hindu-Buddhist Interaction in Twentieth Century India» invited presentation to a Conference on Interaction Between Buddhism and Hinduism, Carleton University, Ottawa.
1991 «Hinduism: War and Peace», invited presentation at International Conference, «The Pacifist Impulse in Historical Perspective», University of Toronto .
1992 «Vaisnavism in Uttar Pradesh since 1947», Presentation at Sri Caitanya Prema Samsthana in Vrindavana UP
1992 «Dharma and Ecology» , the Sudhakar Chattopadhay Memorial Lecture, Visvabharati University, Santiniketan (West Bengal)
1992 «A Hindu-Christian Dialogue on Truth» invited presentation at Ramakrishna Institute of Culture, Calcutta (India )
1992 Several lectures on «Hindu-Christian Dialogue» at Serampore College (West Bengal)
1992 «World Religions and Ecology », Two lectures at the Sarvepalli Radhakrishnan Centre for Advanced Study in Philosophy, University of Madras (India)
1992« Moksa and Modern Western Philosophy », Lecture at Kuppuswami Sastri Research Institute, Madras (India)
1992 «Hindu Jagaran: Der moderne politische Hinduismus», Lecture at University of Trier, Germany
1993 «Hinduism on Population, Resource Consumption and Environment», Invited presentation to «Summer Institute 1993», Chateau Whistler.
1993 «All Religions are Incomplete», invited presentation to Delhi Congress of the International Federation for World Peace.
1994 «Secular Perceptions of Evil: Challenges to traditional religious notions of sin». Invited presentation to Seoul Congress of International Federation for World Peace.
1995 «Srila Prabhupada as Educator: The Education of Human Emotions» Invited presentation to Srila Prabhupada Conf. in Detroit.
