Berkeleianism, Hegelianism, Kantianism, Neoplatonism, Platonic form, Platonic idea, Platonism, absolute idealism, animatism, animism, form, hylozoism, idealism, immaterialism, mediumism, metaphysical idealism, monistic idealism, necromancy, panpsychism, personalism, psychism, seance, sitting, solipsism, spirit, spiritism, subjectivism, transcendental, universal