Our essential and ultimate nature, the ineffable dimension of our being. It is another name for atman (the Supreme Self). The Spiritual Heart is the Supreme Consciousness, the ultimate Subject, the pure “I.” It is the Witness Consciousness, that intimate observer of all our thoughts, emotions, and sensations, our minds, and the entire Universe in both its inner and outer dimensions. The Spiritual Heart is not just a spark of God—the Spiritual Heart is God.