Idealism, though just in its premises, and often daring and honest in their application, is stultified by the exclusive intellectualism of its own methods: by its fatal trust in the squirrel-work of the industrious brain instead of the piercing vision of the desirous heart. It interests man, but does not involve him in its processes: does not catch him up to the new and more real life which it describes. Hence the thing that matters, the living thing, has somehow escaped it; and its observations bear the same relation to reality as the art of the anatomist does to the mystery of birth.
Evelyn Underhill, Mysticism: A Study in the Nature and Development of Spiritual Consciousness
idealism, intellectualism, mysticism