Acosmism, held in contrast or equivalent to pantheism, denies the reality of the universe, seeing it as ultimately illusory (the prefix "ἀ-" in Greek meaning negation; like "un-" in English), and only the infinite unmanifest Absolute as real. Conceptual versions of Acosmism are found in eastern and western philosophies. Maya (Illusion) The concept of Maya in the non-dual Advaita Vedanta school of Hinduism is a form of acosmism. Maya means "illusion, appearances". The universe is considered to be Māyā, however this does not mean the universe is considered as unreal. Wendy Doniger explains, "to say that the universe is an illusion (māyā) is not to say that it is unreal; it is to say, instead, that it is not what it seems to be, that it is something constantly being made. Māyā not only deceives people about the things they think they know; more basically, it limits their knowledge to things that are epistemologically and ontologically second-rate." In the Vedanta school of Hinduism, the perceived world is Maya that hides the Absolute and Ultimate Reality (Brahman). The human mind constructs a subjective experience, states Vedanta, which leads to the peril of misunderstanding Maya as well as interpreting Maya as the only and final reality. Vedantins assert the "perceived world including people are not what they appear to be, there is more to them than their perceived physical forms". Māyā is that which manifests, perpetuates a sense of false duality (or divisional plurality). This manifestation is real, but it obfuscates and eludes the hidden principles and true nature of reality. Vedanta holds that liberation is the unfettered realization and understanding of these invisible principles, primarily that the individual Self (Soul) is the same as the Self in others and the Self in everything (Brahman). Michael Comans says that the purpose of Advaita Vedanta as stated in the Māṇḍῡkya Upaniṣhad is to reveal that there is a single Absolute Reality which underlies the cosmos, yet is inherently acosmic, and which constitutes the essential “core”, or “self” of all beings.