Let none think that there is no more knowledge for them to gain. The depth of human intellect may be measured; the works of human authors may be mastered; but the highest, deepest, broadest flight of the imagination cannot find out God. There is infinity beyond all that we can comprehend. We have seen only the glimmering of divine glory and of the infinitude of knowledge and wisdom; we have, as it were, been working on the surface of the mine, when rich golden ore is beneath the surface, to reward the one who will dig for it.
Ch. 8, p. 114 - Christ's Object Lessons (1900)