Materialism typically contrasts with dualism, phenomenalism, idealism, vitalism and dual-aspect monism. It also encompass beliefs of panentheism, pantheism and monism. Thus, Kashmir Shaivism is also propounding of theistic monism or panentheism. This neutral monism, as it is called, resembles property dualism. Advaita Vedanta is most often regarded as an idealist monism. Yoga disputes the monism of Advaita Vedanta. This is known as holism or monism. Deleuze summarizes this ontology in the paradoxical formula "pluralism = monism". Polkinghorne prefers "dual-aspect monism" to materialism. In modern Hinduism, the term "absolute monism" is being used for Advaita Vedanta. Value pluralism is opposed to "value monism". The spiral is also a symbol of the dialectic process and Dialectical monism. Today, the most common forms of monism in Western philosophy are physicalist. Consistently, his own view combined monism with absolute idealism. Another form of monism, idealism, states that the only existing substance is mental.