1969 «Hindu-Christian Dialogue», Special lecture at the Theological Faculty, University of Munich, Germany
1970 «Weltkulturen-Weltreligionen-Weltmission», Symposium on «Heil und Unheil durch Mission», organized by Katholische Akademie in Bayern, Munich, Germany
1970 «Indian Theology», Interfaith Conference in Bombay: the Institute of Indian Culture, Bombay and Christian Institute for the Study of Religion and Society, Bangalore, India
1971 «Hindu-Christian Dialogue: Its Religious and Cultural Implications», Annual Conference of the Canadian Society for the Study of Religion, Memorial University, St. John's, Newfoundland
1971 «Hrdayavidya - A Hindu-Christian Theology of the Heart», Guest lecture, McGill University, Montreal
1972 «The Complementarity of Hinduism and Christianity», Special guest lecture, University of Calgary
1973 «Hindu-Christian Dialogue: The Encounter of two absolute truth claims», Address to a Symposium on «The Future of Religion: Are Exclusive Truth Claims Absolete?» Carleton University, Ottawa
1974 «New Religions - Liberation or Enslavement?» The Chancellor Dunning Lecture at Queen's University, Kingston, ON
1974 «World Religions and the Ecological Crisis», and «Complementarity as a Model for Inter-religious Dialogue» University of Windsor, ON
1974 «Vidya and avidya in Vedanta» and «Western Views of Indian Philosophy», Brock University, St. Catherines, ON
1974 «Bhakti-Yoga», Hindu Society of Manitoba, Winnipeg
1975 «The Creative Function of Language », contribution to a panel on Indian Philosophy of Language, Annual Conference of the Canadian Society for the Study of Religion, Laval University, PQ
1976« Krsna-consciousness and Christ -consciousness », Address to a conference organized in honor of B. Lonergan: Carleton University, Ottawa, ON
1977 «The Religion of Study», Symposium in honor of Raimundo Panikkar, University of California at Santa Barbara
1978 «From End to Beginning», The Principal Miller Endowment Lectures of the University of Madras, India
1979 «Two-Tiered Thinking», Scholars 'Forum on «Thinking», at the Winnipeg Art Gallery
1981 «Moksa and Critical Theory», paper read at the annual conference of the Canadian Society for the Study of Religion , University of Ottawa, ON
1982 «Contemporary Vaisnava Conceptions of Karma and Rebirth», Address to the conference on «Contemporary Indian Conceptions of Karma», organized at the University of Calgary, AB
1983 році "The Body of God», The Charles Strong Memorial Lecture, special invitation to Brisbane, Australia, and Wellington, New Zealand
1983 році "Political Hinduism since Independence », Special lecture held at the University of Sydney, Australia
1983« Indian Religious Movements in the West », The A. L. Basham Lecture, held at the National University of Australia, Canberra, Australia
1984 «Die Dialektik von Charisma und Institution als Motiv der Religionsgeschichte», Address at the 5th European Congress of the Wissenschaftliche Gesellschaft f?r Theologie, held at Z?rich, Switzerland
1985 «The Hare-Krishna Movement and the American Mainstream Religions», Address to a Symposium on the Hare Krishna Movement in New Vrindaban , W. Va., USA
1985 «The Response of Modern Vaisnavism to Religious Pluralism», Address to a Conference on «Modern Indian Responses to Religious Pluralism», University of Calgary
1985 «Mythos-Logos and Logos-Mythos», a panel contribution, Manitoba Writers 'Guild, Winnipeg, Manitoba
1985 «Dialog als Methode der Religionswissenschaft», Special lecture, Bonn University, Germany
1985 «Indische Beitr?ge zur Naturkenntnis», Special lecture at the University of Munich, Germany
