the mind-stuff (Citta) from taking various forms (Vrittis)." Edwin Bryant writes that to Patanjali, "Yoga essentially consists of meditative practices culminating in attaining a state of consciousness free from all modes of active or discursive thought, and of eventually attaining a state where consciousness is unaware of any object external to itself, that is, is only aware of its own nature as consciousness unmixed with any other object." Baba Hari Dass writes that if yoga is understood as nirodha (mental control), its goal is "the unqualified state of niruddha (the perfection of that process)". "Yoga (union) implies duality (as in joining of two things or principles); the result of yoga is the nondual state ... as the union of the lower self and higher Self. The nondual state is characterized by the absence of individuality; it can be described as eternal peace, pure love, Self-realization, or liberation." Patanjali defined an eight-limbed yoga in Yoga Sutras 2.29: Yama (The five abstentions): Ahimsa (Non-violence, non-harming other living beings), Satya (truthfulness, non-falsehood), Asteya (non-stealing), Brahmacharya (celibacy, fidelity to one's partner), and Aparigraha (non-avarice, non-possessiveness). Niyama (The five "observances"): Śauca (purity, clearness of mind, speech and body), Santosha (contentment, acceptance of others and of one's circumstances), Tapas (persistent meditation, perseverance, austerity), Svādhyāya (study of self, self-reflection, study of Vedas), and Ishvara-Pranidhana (contemplation of God/Supreme Being/True Self). Asana: Literally means "seat", and in Patanjali's Sutras refers to the seated position used for meditation. Pranayama ("Breath exercises"): Prāna, breath, "āyāma", to "stretch, extend, restrain, stop". Pratyahara ("Abstraction"): Withdrawal of the sense organs from external objects. Dharana ("Concentration"): Fixing the attention on a single object. Dhyana ("Meditation"): Intense contemplation of the nature of the object of meditation. Samadhi ("Liberation"): merging consciousness with the object of meditation. In Hindu scholasticism since the 12th century, yoga has been one of the six orthodox philosophical schools (darsanas): traditions which accept the Vedas. Yoga and Vedanta Yoga and Vedanta are the two largest surviving schools of Hindu traditions. Although they share many principles, concepts, and the belief in Self, they differ in degree, style, and methods; yoga accepts three means to obtain knowledge, and Advaita Vedanta accepts. Yoga disputes Advaita Vedanta's monism. It believes that in the state of moksha, each individual discovers the blissful, liberating sense of himself or herself as an independent identity; Advaita Vedanta teaches that in the state of moksha, each individual discovers the blissful, liberating sense