Returning from Rome in June 1899, Suhard was made professor of philosophy at the Grand Seminary of Laval on the following 30 September.

Suhard was one of the cardinal electors who participated in the 1939 papal conclave that selected Pope Pius XII, who named him Archbishop of Paris on 11 May 1940.

[1] During World War II, the cardinal was briefly detained in his archiepiscopal residence by German forces on 26 June 1940.

[2] Suhard also presided over the funeral, again at Notre-Dame, of Vichy Minister and propagandist Philippe Henriot who had been murdered in his office by resistance fighters.

In July 1942, during the deportation of the Jews of Paris, he appealed to Pétain to maintain "the exigencies of justice and the rights of charity.

Another quote is attributed to him from Donald Cozzens' The Changing Face of the Priesthood: "One of the priest's first services to the world is to tell the truth.