What is materialism in spirituality?

The growth from materialism to spirituality is slow.

The transition from the confusion of many ideas and impressions to the peace and unity of truth is slow, but every step leads you to a fuller knowledge of that truth, which includes all-knowledge and all-love, and is the real you—the image, the essence, the child of God, conscious of your real self, with its glorious freedom and possibilities of perfection, and conscious also of the duty this brings to do all your part in aiding this growth.