Indian logicThe development of Indian logic dates back to the anviksiki of Medhatithi Gautama (c. 6th century BCE); the Sanskrit grammar rules of Pāṇini (c. 5th century BCE); the Vaisheshika school's analysis of atomism (c. 6th century BCE to 2nd century BCE); the analysis of inference by Gotama (c. 6th century BC to 2nd century CE), founder of the Nyaya school of Hindu philosophy; and the tetralemma of Nagarjuna (c. 2nd century CE). Indian logic stands as one of the three original traditions of logic, alongside the Greek and the Chinese logic.
CharvakaCharvaka (चार्वाक; IAST: Cārvāka), also known as Lokāyata, is an ancient school of Indian materialism. It is considered an example of atheistic schools in the Hindu tradition. Charvaka holds direct perception, empiricism, and conditional inference as proper sources of knowledge, embraces philosophical skepticism and rejects ritualism. It was a popular belief system in ancient India. Brihaspati, a philosopher, is traditionally referred to as the founder of Charvaka or Lokāyata philosophy, although some scholars dispute this.
MīmāṃsāMīmāṁsā (Sanskrit: मीमांसा) is a Sanskrit word that means "reflection" or "critical investigation" and thus refers to a tradition of contemplation which reflected on the meanings of certain Vedic texts. This tradition is also known as Pūrva-Mīmāṁsā because of its focus on the earlier (pūrva) Vedic texts dealing with ritual actions, and similarly as Karma-Mīmāṁsā due to its focus on ritual action (karma). It is one of six Vedic "affirming" (āstika) schools of Hinduism.
Nyaya(Sanskrit: न्याय, nyā-yá), literally meaning "justice", "rules", "method" or "judgment", is one of the six traditional schools of Hindu philosophy that affirm the Vedas (an astika school). Nyaya's most significant contributions to Indian philosophy were systematic development of the theory of logic, methodology, and its treatises on epistemology. Nyaya school's epistemology accepts four out of six Pramanas as reliable means of gaining knowledge – Pratyakṣa (perception), Anumāṇa (inference), Upamāṇa (comparison and analogy) and Śabda (word, testimony of past or present reliable experts).
VishnuVishnu (ˈvɪʃnuː ; Viṣṇu, ʋɪʂɳʊ), also known as Narayana and Hari, is one of the principal deities of Hinduism. He is the supreme being within Vaishnavism, one of the major traditions within contemporary Hinduism. Vishnu is known as The Preserver within the Trimurti, the triple deity of supreme divinity that includes Brahma and Shiva. In Vaishnavism, Vishnu is the supreme being who creates, protects, and transforms the universe. In the Shaktism tradition, the Goddess, or Adi Shakti, is described as the supreme Para Brahman, yet Vishnu is revered along with Shiva and Brahma.
AtomismAtomism (from Greek ἄτομον, atomon, i.e. "uncuttable, indivisible") is a natural philosophy proposing that the physical universe is composed of fundamental indivisible components known as atoms. References to the concept of atomism and its atoms appeared in both ancient Greek and ancient Indian philosophical traditions. Leucippus is the earliest figure whose commitment to atomism is well attested and he is usually credited with inventing atomism. He and other ancient Greek atomists theorized that nature consists of two fundamental principles: atom and void.
VaisheshikaVaisheshika or Vaiśeṣika (vaɪˈʃɛʃɪkə; वैशेषिक) is one of the six schools of Hindu philosophy from ancient India. In its early stages, the Vaiśeṣika was an independent philosophy with its own metaphysics, epistemology, logic, ethics, and soteriology. Over time, the Vaiśeṣika system became similar in its philosophical procedures, ethical conclusions and soteriology to the Nyāya school of Hinduism, but retained its difference in epistemology and metaphysics.
Saguna brahmanSaguna Brahman (lit. "The Absolute with qualities") came from the Sanskrit (सगुण) "with qualities, gunas" and Brahman (ब्रह्मन्) "the Absolute", close to the concept of immanence, the manifested divine presence. Rājarshi (2001: p. 45) conveys his estimation of the historical synthesis of the School of Yoga (one of the six Āstika schools of Hinduism) which he holds introduces the principle of "Isvara" as Saguna Brahman, to reconcile the extreme views of Vedanta's "advandva" and Sankya's "dvandva": "Introducing the special tattva (principle) called Ishvara by yoga philosophy is a bold attempt to bring reconciliation between the transcendental, nondual monism of vedanta and the pluralistic, dualistic, atheism of sankhya.
AjñanaAjñāna (अज्ञान) was one of the nāstika or "heterodox" schools of ancient Indian philosophy, and the ancient school of radical Indian skepticism. It was a Śramaṇa movement and a major rival of early Buddhism, Jainism and the Ājīvika school. They have been recorded in Buddhist and Jain texts. They held that it was impossible to obtain knowledge of metaphysical nature or ascertain the truth value of philosophical propositions; and even if knowledge was possible, it was useless and disadvantageous for final salvation.
ShabdaShabda (शब्द, ), is the Sanskrit word for "speech sound". In Sanskrit grammar, the term refers to an utterance in the sense of linguistic performance. In classical Indian philosophy of language, the grammarian Katyayana stated that shabda ("speech") is eternal (nitya), as is artha "meaning", and that they share a mutual co-relation. According to Patanjali, the permanent aspect of shabda is ("meaning"), while dhvani ("sound, acoustics") is ephemeral to shabda.
