There's a brand of spirituality that teaches matter is "real." Le Hongzhi, who is the founder of Falun Dafa, teaches that conserving your virtue or white substance & eliminating karma or black substance & avoiding collecting more of it causes your mortal body molecular make-up to be gradually replaced by indestructible, high-energy matter. This is the Buddha School method of becoming an Immortal. If I understand him correctly, then altering our energetic make-up over a long period of time frees us from the cycle of birth, old age, illness, & death. So, is Le Hongzhi ultimately a "materialist" spiritual teacher?