There are 6 main orthodox (astika) schools of Indian philosophy and 2 main unorthodox (nastika) schools6 orthodox systems are:- Vedanta
- Mimamsa
- Sankhya
- Yoga
- Nyaya
- Vaisheshika
2 main unorthodox systems are:All classical orthodox systems recognise the authority of Vedas - sacred scriptures - considered revealed to humanity by Gods. This type of scriptures is called Shruti - "that which has been heard". It is canonical, consisting of revelation and is considered eternal. That is why Hindu tradition calls themselves Sanatana Dharma - Eternal Law. "Hindu" term was given much later by muslims - meaning - living on the other side of Ind or Indus/Hindus river.
Other type of spiritual literature such as Upanishads, Yogic and other scriptures are called Smriti - "that which has been remembered" and is more freestyle and may change over time. The well known smritis include Bhagavad Gita, various Puranas, the epics Ramayana and Mahabharata.
There are 4 Vedas:- Rig-Veda - mostly of reciting hymns;
- Yajur-Veda - mostly of performing rituals and sacrifices;
- Sama-Veda - mostly of chanting songs and hymns;
- Atharva-Veda - mostly of rituals, philosophical speculations and magical formulas.
The Vedas are considered to be revelations of sacred mantras and knowledge heard by ancient Sages and Rishis in a deep and intense meditation.
The Vedas are among the oldest sacred texts on Earth. Rigveda Samhita for example was composed in the north-west of Indian Subcontinent between 1500 and 1200 BC.
The Vedas were orally transmitted since their composition for several millennia. Usually from father to son or from guru to shishya (disciple).
The correct tradition or "sampradaya" has a great importance. It has the authority to clarify and provide direction in the application of the knowledge. In case of Mantras proper articulation and Sanskrit pronunciation is of great importance. Chanting in a group, supporting sounds by special mudras (hand sacred gestures), strong memory culture were always considered crucial and were a part of Vedic Brahmin education. Mantras are considered as primordial rhythms of creation, preceding the forms to which they refer.
The Sanskrit word Veda - "knowledge, wisdom" comes from the root VID - to know, to see. These 4 are called Samhitas - collection of Mantras. They contain 72,000 mantras - same number as Nadis - subtle energy channels in the body.
These Samhitas contain invocations to deities like Indra, Surya, Agni. For example, famous Gayatri Mantra from Ridveda - Mantra of Sun-God or rather Goddess.
Vedic Sanskrit texts also include Brahmanas - prose texts commenting and explaining rituals connected to these mantras.
There are also Aranyakas - forest texts, composed by people who meditated in the woods. They contain a lot of symbolic meanings.
Also included in the Vedic corpus are older Upanishads - such as Chandogya, Katha, Kena Upanishads - largely philosophical texts, often in a form of dialogue.
After the end of the Vedic period many additional Upanishads were composed, for example by the famous Indian sage and scholar Adi Shankara.
Among 6 orthodox schools of Indian Philosophy 3 are more relevant these days: Vedanta, Sankhya and Yoga. Over the centuries they have also experienced various mutual influences and are very much interrelated and interlinked nowadays. We will explore some theories and techniques of these systems further in our course.
Among them - Sankhya and Yoga are mostly connected and influenced by Tantra philosophy and practice.