The Nyaya school emphasizes the importance of perception as the primary means of acquiring knowledge, arguing that it provides direct and immediate access to reality.

Advaita Vedanta teaches that the individual self and the universal self are ultimately identical and non-dual, forming a single, unified reality.

Chitta is the Sanskrit term used in Indian philosophy to refer to the subjective experience of consciousness, encompassing all mental processes and states.

Shankara is the Indian philosopher most closely associated with the theory of illusionism (maya), which argues that the world we perceive is ultimately an illusion, a product of our own minds.

The Samkhya school posits that all of reality is composed of three gunas, or qualities: sattva (purity, goodness), rajas (passion, activity), and tamas (darkness, inertia).

Atman is the Sanskrit term used in Indian philosophy to refer to the individual's sense of self or identity, often translated as 'soul' or 'self'.

Shankara is the Indian philosopher most closely associated with the theory of non-dualism (advaita), which posits that all existence is ultimately one and indivisible.

The ultimate goal of spiritual practice in the Yoga school is moksha, or liberation, which is the state of freedom from suffering and the cycle of rebirth.

Ramanuja is the Indian philosopher most closely associated with the theory of qualified non-dualism (vishishtadvaita), which argues that the individual self and the universal self are distinct but inseparable, like a part and a whole.

The Mimamsa school of Indian philosophy is primarily concerned with the interpretation and understanding of the Vedas, the sacred texts of Hinduism.

Madhva is the Indian philosopher most closely associated with the theory of dvaita (dualism), which argues that the individual self and the universal self are separate and distinct entities.

Brahman is the Sanskrit term used in the Vedanta school of Indian philosophy to refer to the ultimate reality or ground of existence, often translated as 'God' or 'the Absolute'.

Ramanuja is the Indian philosopher most closely associated with the theory of bhakti (devotion), which emphasizes the importance of love and devotion to God as the means to spiritual liberation.

Hetvabhasa is the Sanskrit term used in the Nyaya school of Indian philosophy to refer to the logical fallacies or errors in reasoning.

Nimbarka is the Indian philosopher most closely associated with the theory of dvaitadvaita (dualistic non-dualism), which argues that the individual self and the universal self are both distinct and non-distinct, like a wave and the ocean.