The conversion of Cardinal Newman, an educated, renown Anglican, gave respectability to converting to Catholicism in England. Recusant Catholics had been treated as social outcasts and persecuted when the English monarchy outlawed the practice of the true faith. Hence the Catholic hierarchy rejoiced when Cardinal Newman broke the ice for many Anglicans to enter the Church and eloquently defended the Catholic faith. Yet, heroes are still human, and converts to the Church are practically unable to completely discard their non-Catholic mindset simply by their baptism. All this made the Catholic hierarchy both in Rome and in England both praise and fear this newly adopted son. How could his Protestant mindset be criticized and he still be used as a showpiece of Catholic respectability? Cardinal Newman’s theory of the development of doctrine, along with his other ideas that were controversial during his time, are herein analyzed by renown theologians and an equally literary Catholic, Orestes Brownson. On the other hand Newman’s famous biographer, Wilfred Ward, made the Cardinal an untouchable anti-liberal to traditionally minded Catholics, yet an avian guard liberal pioneer to liberal Catholics, including the very founders of the school of Modernism. Even if it can be argued that Newman act in good faith, what is not generally known is that he formed his own school of thought within the Church favoring a mutability of Catholic doctrine, seemingly adopted and acclaimed by the Second Vatican Council.