B.B. Warfield, The Right of Systematic Theology (1897), pages 84-85:
There is no creative power in doctrines, however true; and they will pass over dead souls, leaving them as inert as they found them: it is the Creator Spiritus [Holy Spirit] alone who is competent to quicken dead souls into life; and without Him there has never been, and never will be, one spark of life produced by all the doctrines in the world.
HT: Zaspel, p. 76.
Tony Reinke 