Our doctrine that faith is knowledge and the highest knowledge is to be distinguished from that of Ritschl, whose theology is an appeal to the heart to the _exclusion_ of the head—to _fiducia_ without _notitia_. But _fiducia_ includes _notitia_, else it is blind, irrational, and unscientific. Robert Browning, in like manner, fell into a deep speculative error, when, in order to substantiate his optimistic faith, he stigmatized human knowledge as merely apparent. The appeal of both Ritschl and Browning from the head to the heart should rather be an appeal from the narrower knowledge of the mere intellect to the larger knowledge conditioned upon right affection. See A. H. Strong, The Great Poets and their Theology, 441. On Ritschl’s postulates, see Stearns, Evidence of Christian Experience, 274-280, and Pfleiderer, Die Ritschl’sche Theologie. On the relation of love and will to knowledge, see Kaftan, in Am. Jour. Theology, 1900:717; Hovey, Manual Christ. Theol., 9; Foundations of our Faith, 12, 13; Shedd, Hist. Doct., 1:154-164; Presb. Quar., Oct. 1871, Oct. 1872, Oct. 1873; Calderwood, Philos. Infinite, 99, 117; Van Oosterzee, Dogmatics, 2-8; New Englander, July, 1873:481; Princeton Rev., 1864:122; Christlieb, Mod. Doubt, 124, 125; Grau, Glaube als höchste Vernunft, in Beweis des Glaubens, 1865:110; Dorner, Gesch. prot. Theol., 228; Newman, Univ. Sermons, 206; Hinton, Art of Thinking, Introd. by Hodgson, 5. 2. Man’s capacity for the knowledge of God _In the capacity of the human mind for knowing God and certain of these relations._—But it has urged that such knowledge is impossible for the following reasons: A. Because we can know only phenomena. We reply: (_a_) We know mental as well as physical phenomena. (_b_) In knowing phenomena, whether mental or physical, we know substance as underlying the phenomena, as manifested through them, and as constituting their ground of unity. (_c_) Our minds bring to the observation of phenomena not only this knowledge of substance, but also knowledge of time, space, cause, and right, realities which are in no sense phenomenal. Since these objects of knowledge are not phenomenal, the fact that God is not phenomenal cannot prevent us from knowing him.