St. John Henry Newman: Doctor of the Church
St. Pope Pius X said: "The writings of Cardinal Newman, far from being in disagreement with Our Encyclical Letter Pascendi, are very much in harmony with it...Regarding the large number of books of great importance and influence which he wrote as a Catholic, it is hardly necessary to exonerate them from any connection with this present heresy...We therefore congratulate you for having, through your knowledge of all his writings, brilliantly vindicated the memory of this eminently upright and wise man from injustice...
Those who were accustomed to abusing his name and deceiving the ignorant should henceforth cease doing so. Would that they should follow Newman the author faithfully by studying his book...let them understand his pure and whole principles, his lessons and inspiration which they contain. They will learn many excellent things from such a great teacher..."
"The Catholic principle of doctrinal development as explained by Cardinal Newman is fundamentally different.
Msgr. Philip Flanagan explains: 'Newman's theory of doctrinal development is fundamentally different from the theology of the Modernists, who so unjustly claim his support. For them, revelation is a continuing process destined to go on till the end of time, with earlier statements of the truth being modified and perhaps even contradicted by later statements more suited to the spirit of the age in which they are made. For Newman the revealed message was given once and for all by God, to be more and more fully grasped as time goes on, but to be passed on in its entirety, undiminished and uncorrupted. For the Modernist, dogmas have no absolute truth and are valid for the time in which they are made, but not necessarily at other periods.' (NAL, p.26).
Newman shows clearly that there can never be any possibility of contradiction during the course of the development. Each stage is potentially contained in its preceding stage all the way back to the begining. I have already cited the example of the acorn and the oak tree." - Ref: 'Partisans of Error: St. Pius X Against the Modernist' by Michael Davies, pg.54.