This theory is radically false. There is no knowledge of the heart.
Feeling can give knowledge no more than can excitement.
There must be knowledge by the head before there can be feeling with the heart. Once more you see the point. The religion of the heart and the theology of the head cannot be divorced. Unless the heart be disposed toward Christ, the head cannot, because it will not, discern the truth of Christ. On the other hand, zeal in Christ's cause will be strong and abiding in proportion as the faith from which it springs and by which it is nourished is intelligent.