Why does Newman cast such aspersions on scholasticism in Grammar of Assent?

"This same power of the dogma may be illustrated from the Ritual. Consider the services for Christmas or Epiphany; for Easter, Ascension, and (I may say) pre-eminently Corpus Christi; what are these great Festivals but comments on the words, “The Son is God”? Yet who will say that they have the subtlety, the aridity, the coldness of mere scholastic science? Are they addressed to the pure intellect, or to the imagination? do they interest our logical faculty, or excite our devotion? Why is it that personally we often find ourselves so ill-fitted to take part in them, except that we are not good enough, that in our case the dogma is far too much a theological notion, far too little an image living within us? And so again, as to the Divinity of the Holy Ghost: consider the breviary offices for Pentecost and its Octave, the grandest perhaps in the whole year; are they created out of mere abstractions and inferences, or has not the categorical proposition of St. Athanasius, “The Holy Ghost is God,” such a place in the imagination and the heart, as suffices to give birth to the noble Hymns, Veni Creator, and Veni Sancte Spiritus?"