The more I read of Athanasius, Theodoret, etc, the more I see that the ancients did make the Scriptures the basis of their belief.

Letter to Richard Hurrell Froude (23 August 1835), quoted in Letters and Correspondence of John Henry Newman During His Life in the English Church, 1890, Anne Mozley, ed., Longmans’s Green & Co., London, New York, Volume 2, p. 113.