Faith, then, is the highest knowledge, because it is the act of the integral soul, the insight, not of one eye alone, but of the two eyes of the mind, intellect and love to God. With one eye we can see an object as flat, but, if we wish to see around it and get the stereoptic effect, we must use both eyes. It is not the theologian, but the undevout astronomer, whose science is one-eyed and therefore incomplete. The errors of the rationalist are errors of defective vision. Intellect has been divorced from heart, that is, from a right disposition, right affections, right purpose in life. Intellect says: “I cannot know God”; and intellect is right. What intellect says, the Scripture also says: _1 Cor. 2:14—_“the natural man receiveth not the things of the Spirit of God: for they are foolishness unto him; and he cannot know them, because they are spiritually judged”_; 1:21—_“in the wisdom of God the world through its wisdom knew not God.” The Scripture on the other hand declares that “by faith we know”_ (Heb. 11:3)_. By “heart” the Scripture means simply the governing disposition, or the sensibility + the will; and it intimates that the heart is an organ of knowledge: _Ex. 35:25—_“the women that were wise-hearted”; _Ps. 34:8—_“O taste and see that Jehovah is good” = a right taste precedes correct sight; _Jer. 24:7—_“I will give them a heart to know me”; _Mat. 5:8—_“Blessed are the pure in heart; for they shall see God”; _Luke 24:25—_“slow of heart to believe”; _John 7:17—_“If any man willeth to do his will, he shall know of the teaching, whether it is of God, or whether I speak from myself”; _Eph. 1:18—_“having the eyes of your heart enlightened, that ye may know”; _1 John 4:7, 8—_“Every one that loveth is begotten of God, and knoweth God. He that loveth not knoweth not God.” See Frank, Christian Certainty, 303-324; Clarke, Christ. Theol., 362; Illingworth, Div. and Hum. Personality, 114-137; R. T. Smith, Man’s Knowledge of Man and of God, 6; Fisher, Nat. and Method of Rev., 6; William James, The Will to Believe, 1-31; Geo. T. Ladd, on Lotze’s view that love is essential to the knowledge of God, in New World, Sept. 1895:401-406; Gunsaulus, Transfig. of Christ, 14, 15. C. Faith, therefore, can furnish, and only faith can furnish, fit and sufficient material for a scientific theology.—As an operation of man’s higher rational nature, though distinct from ocular vision or from reasoning, faith is not only a kind, but the highest kind, of knowing. It gives us understanding of realities which to sense alone are inaccessible, namely, God’s existence, and some at least of the relations between God and his creation.