Mind–body dualism
Ontological dualism makes dual commitments about the nature of existence as it relates to mind and matter, and can be divided into three different types:Substance dualism is a type of dualism most famously defended by René Descartes, which states that there are two kinds of foundation: mental and body. This philosophy states that the mental can exist outside of the body, and the body cannot think. Substance dualism is important historically for having given rise to much thought regarding the famous mind–body problem. Substance dualism is a philosophical position compatible with most theologies which claim that immortal souls occupy an independent realm of existence distinct from that of the physical world.
David Loy
In addition to many scholarly papers and popular articles, Loy is the author of several books on comparative philosophy and social ethics, including:"Nonduality" focuses on the nonduality of subject and object in Buddhism, Vedanta, and Taoism, with reference to several Western thinkers including Wittgenstein and Heidegger. The main argument is that these three Asian systems may be different attempts to describe the same (or very similar) experience. The categories of Buddhism (no self, impermanence, causality, eightfold path) and Advaita Vedanta (all-Self, time and causality as maya, no path) are "mirror images" of each other. Ultimately it becomes difficult to distinguish a formless Being (Brahman) from a formless nonbeing (shunyata). Buddhism can be understood as a more phenomenological description of nonduality, while Vedanta is a more metaphysical account.