True Reason is God's Highest Thought

Not unfrequently the Christian says, as if conscious of his inability to stand firm in the great battle of thought, and willing to find the first refuge that presents itself, that the religion of Christ, standing on a basis peculiar to itself, may be regarded as above and beyond reason. I confess that I hesitate in the acceptance of such expressions. So far from this being the correct view, there is a sense undoubtedly, in which it may be affirmed without presumption, that there is nothing above reason; neither God nor the creatures of God; neither men nor angels; neither finite nor Infinite. If it be admitted that God exists, it is still true, that he is not available to us as an existence, and is not known to us as an existence, and his existence cannot be logically affirmed and accepted, except through the instrumentality of perception and reasoning. If indeed by reason be meant that sad semblance of reason, which by its own action is separated from, and is not enlightened and aided by contact with the everlasting truth; in other words, that form of reason or semblance of reason, which in being separated from the great Source and Guide of all our faculties is perverted by ignorance, prejudice, and passion, then the matter presents itself in another aspect, and is entitled to another answer. But reason in the true sense, reason in the greatness of its intuitional, as well as its relational and inductive movement, reason such as God is able to incarnate inspirationally in the thought and intellect of man, has nothing above it. True reason is God’s highest thought; it holds a position which it cannot change; it sustains an office which it cannot abnegate; and the whole universe is not only dependent upon it for its revelation as an object of knowledge, but in all its coming progress accepts its aid, and marches in harmony with it.

— Absolute Religion (1873), Chapter 1.