In 1960, de Corneille was the secretary of the Nathaneal Institute, an Anglican missionary institute dedicated to converting Jews to Christianity. De Corneille initiated an interfaith dialogue between the Christian and Jewish communities that led to the institute transforming itself into "the Christian-Jewish Dialogue of the Anglican Church of Canada" with de Corneille as director. The Dialogue sought better understanding between the two faith groups rather than religious conversion. In 1966, his book, Christians and Jews: The Tragic Past and the Hopeful Future was published by Harper and Row. De Corneille is credited as the first Canadian clergyman to urge the Christian community to re-evaluate its attitude towards Jews. As a result of de Corneille's efforts, the Anglican Church re-evaluated its attitude towards the Jewish community and renounced proselytization in favour of understanding, dialogue and reconciliation. The process was continued by de Corneille by introducing the programme into other Canadian denominations, the Episcopal Church U.S.A., and through his membership in the World Council of Churches in Geneva. He worked with the National Conference of Christians and Jews U.S.A.. and the Canadian Conference of Christians and Jews as organizer of a major International Conference on Christian-Jewish relations. The Christian-Jewish dialogue program initiated by de Corneille ultimately spread to the United States and Europe and helped lead to a change of attitude within mainstream Christian churches, particularly towards anti-Semitism De Corneille's activity earned him the respect of the Jewish community. In 1971 he was appointed national director of the League for Human Rights of B'nai Brith Canada where he worked until 1979. In the 1979 federal election he was elected to the House of Commons of Canada as the LiberalMember of Parliament for Eglinton—Lawrence, serving in the House until 1988.
Political career
In parliament, he was the founding chairman of the Canada-Israel Parliamentary Friendship Group, and a chairman of the Canada-Italy Parliamentary Friendship Group. From 1980 to 1981 he was national chairman of the National Committee for a Human Rights Charter which lobbied parliament for the creation of the Canadian Charter of Rights and Freedoms. He served for three terms in the House of Commons until he was challenged for the Liberal nomination by Joe Volpe and defeated in a bitter nomination meeting prior to the 1988 federal election.
Works
De Corneille, Roland. Christians and Jews: The Tragic Past and the Hopeful Future. New York: Harper & Row, 1966.