In his Letter to the Duke of Norfolk, Newman dealt with the Church's necessity for salvation, not for its own sake, but only as a teaching that he considered as offering "the opportunity of a legitimate minimizing." [In Certain Difficulties Felt by Anglicans in Catholic Teaching (London: Longmans, Green, and Co., 1896), II, 334.] Despite the fact that he complained when his theological opponents designated him as a minimizer, he set out to show that the dogmas taught in the Vatican Council's constitution Pastor aeternus were subject to legitimate minimizing. [Cf. Fenton, "John Henry Newman and the Vatican Definition of Papal Infallibility," in AER, CXIII, 4 (Oct., 1945), 300-20.] He tried to support his contention by appealing to the example of the dogma that there is no salvation outside the Catholic Church. Hence it was from this angle that he approached the teaching on the necessity of the Church for salvation. Fenton