Whilst the Shakta Tantra recognizes, with the four Vedas, the Agamas and Nigaimas, it is now based, as are all other truly Indian Shastras on Veda. Veda, in the sense of Knowledge, is ultimately Spiritual Experience, namely Cit which Brahman is, and in the one partless infinite Ocean of Which the world, as a limited stress in Consciousness arises. So it is said of the Devi in the Commentary on the Trishati: Vedantamahavakya-janya sakshatkara-rupa-brahmavidya She is Brahman-knowledge (Brahmavidya) in the form of direct realization produced by the Vedantic great saying (Mahavakya) -- that is "Tat tvam asi" ("That thou art") and all kindred sayings, So'ham, ("He I am"), Brahmasmi ("I am Brahman") and so forth. In other words, Self-knowledge is self-luminous and fundamental and the basis of all other knowledge. Owing to its transcendency it is beyond both prover and proof. It is self-realized (Svanubhava). But Shruti is the source from which this knowledge arises, as Samkara says, by removing (as also to some extent reason may do) false notions concerning it. It reveals by removing the superincumbent mass of human error. Again, Veda in a primary sense is the world as Idea in the Cosmic Mind of the creating Brahman and includes all forms of knowledge. Thus it is eternal, arising with and as the Samskaras at the beginning of every creation. This is the Vedamurtibrahman. Veda in the secondary sense is the various partial revelations relating to Tattva, Brahman or God, and Dharma, morality, made at different times and places to the several Rishis which are embodied in the four Vedas, Rig, Yajus, Sama and Atharva. Veda is not coextensive therefore with the four Vedas. But are these, even if they be regarded as the "earliest," the only (to use an English term) revelations? Revelation (Akasha-vani) never ceases. When and wherever there is a true Rishi or Seer there is Revelation. And in this sense the Tantra Shastra or Agama claims to be a Revelation. The Shabdabrahmamurti is Nigamadishastramaya: it being said that Agama is the Paramatma of that Murti, the four Vedas with their Angas are its Jivatma; the six philosophies its Indriyas; the Puranas and Upapuranas its gross body; Smriti its hands and other limbs and all, "other Shastras are the hairs of its body. In the Heart-lotus are the fifty Tejomayi Matrika. In the pericarp are the Agamas glittering like millions of suns and moons which are Sarvadharmamaya, Brahmajñanamaya, Sarvasiddhimaya, and Murtiman. These were revealed to the Rishis. In fact all Shastras are said to constitute one great many-millioned collection (Shatakoti Samhita) each being particular manifestations to man of the one, essential Veda. From this follows the belief that they do not contradict, but are in agreement with, one another; for Truth is one whatever be the degree in which it is received, or the form in which the Seers (Rishis) promulgated it to those whose spiritual sight has not strength enough to discern it directly and for themselves. But how, according to Indian notions, can that which is put forward as a Revelation be shown to be such? The answer is that of Ayurveda. A medicine is a good one if it cures. In the same way a Shastra is truly such if the Siddhi which it claims to give is gained as the fruit of the practice of its injunctions, according to the competency and under the conditions prescribed. The principle is a practical and widely adopted one. The tree must be judged by its fruit. This principle may, if applied to the general life of to-day, lead to an adverse judgment on some Tantrik practices. If so, let it be. It is, however, an error to suppose that even such practices as have been condemned, claim to rest on any other basis than Veda. It is by the learned in Tantra Shastra said to be ignorance (Avidya) to see a difference between Agama and Veda. Ignorant notions prevail on the subject of the relation of the Tantras to Veda and the Vedas. I read some years ago in a Bengali book by a Brahmo author that "the difference was that between Hell and Heaven". Now on what is such a condemnatory comparison based? It is safe to challenge production of the proof of such an assertion. Let us examine what the Shakta Tantra (to which allusion was made) teaches. In the first place "Hell" recognizes "Heaven," for the Shakta Tantra, as I have said, acknowledges the authority of Veda. All Indian Shastras do that. If they did not, they would not be Indian Shastra. The passages on this point are so numerous, and the point itself is so plain that I will only cite a few. Kularnava Tantra says (II. 85,140,141) that Kuladharma is based on and inspired by the Truth of Veda. Tasmat vedatmakam shastram viddhi kaulatmakam priye. In the same place Shiva cites passages from Shruti in support of His doctrine. The Prapañcasara and other Tantras cite Vaidika Mahavakya and Mantras; and as Mantras are a part of Veda, therefore, Meru Tantra says that Tantra is part of Veda (Pranatoshini 70). Niruttara Tantra calls Tantra the Fifth Veda and Kulacara is named the fifth Ashrama (ib.); that is it follows all others. Matsyauktamahatantra (XIII) says that the disciple must be pure of soul (Shuddhatma) and a knower of Veda. He who is devoid of Vaidika-kriya (Vedakriya-vivarjita) is disqualified (Maharudrayamala, I Khanda, Ch. 15; II Khanda, Ch. 2; Pranatoshini 108). Gandharva Tantra (Ch. 2, Pranatoshini 6) says that the Tantrik Sadhaka must be a believer in Veda (Astika), ever attached to Brahman, ever speaking of Brahman, living in Brahman and taking shelter with Brahman; which, by the way, is a queer demand to make of those, the supposed object of whose rites is mere debauchery. The Kularnava says that there is no knowledge higher than that of Veda and no doctrine equal to Kaula (III. 113, Nahivedadhika vidya na kaula-samadarshanam). Here a distinction is drawn between Veda which is Vidya and the Kaula teaching which he calls Darshana. See also Mahanirvana Tantra (I. 18, 19; II. 8-15). In Mahanirvana Tantra (III. 72) the Mantra Om Saccidekam Brahma is given and in the Prapañcasara (Ch. XXIX) this (what it calls) "Secret of the Vedas" is explained. That the Shakta Tantra claims to be based on Veda admits of no doubt. In fact Kulluka Bhatta, the celebrated commentator on Manu, says that Shruti is of two kinds, Vaidik and Tantrik. Vaidiki tantrums caviar dvividha shrutih kirtita It is of course the fact that different sects bandy words upon the point whether they in fact truly interpret Shruti and follow practice conformable to it. Statements are made by opposing schools that certain Shastras are contrary to Shruti even though they profess to be based thereon. So a citation by Bhaskararaya in the Commentary to V. 76 of the Lalita sahasranama speaks of some Tantras as "opposed to Veda" (Vedaviruddhani). The Vayu Samhita says: "Shaivagama is twofold, that which is based on Shruti and that which is not. The former is composed of the essence of Shruti. Shrauta is Svatantra and Itara" (v. ante, p. 19). Shaivagamo'pi dvividhah, shrauto' shrautash ca samsmritah Srutisaramayah shrautah svantrastvitaro matah. So again the Bhagavata or Pancaratra Agama has been said to be non-Vaidik. This matter has been discussed by Samkaracarya and Ramanuja following Yamunacarya. We must in all cases distinguish between what a school says of itself and what others say of it. In Christianity both Catholicism and Protestantism claim to be based on the Bible and each alleges that the other is a wrong interpretation of it. Each again of the numerous Protestant sects says the same thing of the others. But is Shakta Tantra contrary to Veda in fact? Let us shortly survey the main points in its doctrine. It teaches that Paramatma Nirguna Shiva is Saccidananda (Prapañcasara, Ch. XXIX: Kularnava, Ch. I. vv. 6-7). Kularnava says "Shiva is the impartite Supreme Brahman, the All-knowing (Sarvajña) Creator of all. He is the Stainless One and the Lord of all. He is One without a second (Advaya). He is Light itself. He changes not, and is without beginning or end. He is attributeless and above the highest. He is Saccidananda" (I. 6-7. And see the Dhyana and Pañcaratnastotra in Mahanirvana Tantra III. 50, 59-63). Brahman is Saccidananda, Eternal (Nitya), Changeless (Nirvikara), Partless (Nishkala), Untouched by Maya (Nirmala), Attributeless (Nirguna), Formless (Arupa), Imperishable (Akshara), All-spreading like space (Vyomasannibha), Self-illuminating (Svyamjyotih), Reality (Tattva) which is beyond mind and speech and is to be approached through spiritual feeling alone (Bhavanagamya). Kularnava I, 6-8; III. 92, 93; IX. 7). (Mahanirvana III. 50, 59-63, 67-68, 74; III. 12). In His aspect as the Lord (Ishvara) of all, He is the All-knower (Sarvajña), Lord of all: whose Body is pure Sattva (Shuddhasattvamaya), the Soul of the universe (Vishvatma). (Mahanirvana I. 61, III. 68). Such definitions simply re-affirm the teaching of Veda. Brahman is That which pervades without limit the Universe (Prapañcasara XXIX; Mahanirvana III. 33-35) as oil the sesamum seed (Sharada Tilaka I, Shaktanandatarangini I, Pranatoshini 13). This Brahman has twofold aspect as Parabrahman (Nirguna, Nishkala) and Shabda-brahman (Saguna, Sakala). Sammohana, a highly interesting Tantra, says (Ch. I) that Kubjika is of twofold aspect, namely, Nishkala when She is Candra-vaktra, and Sakala when called Paramukhi. So too is Guhyakali who as the first is Ekavaktra mahapashupatishi advaitabhavasampanna and as the second Dashavaktra. So the Kularnava says Shabda-brahmaparamabrahmabhedena Brahmano dvaividyam uktam (Khanda V, Ullasa 1). The same Tantra says that Sadashiva is without the bonds (of Maya) and Jiva is with them (Pashabadho bhavej jivah pashamuktah Sadashivahi, IX. 42) upon which the author of the Pranatoshini, citing this passage says "thus the identity of Jiva and Shiva is shown (iti Shivajivayoraikyam uktam). The Shakta Tantra is thus Advaitavada: for it proclaims that Paramatma and Jivatma are one. So it affirms the "grand words" (Mahavakya) of Veda -- "Tat tvam asi," "So'ham," "Brahmasmi" (Mahanirvana VIII. 264-265, V. 105); Prapañcasara II; identifying Hrim with Kundali and Hangsah and then with So'ham. Yah Suksmah So'ham ib. XXIV, Jñanarnava Tantra XXI. 10). As to Brahmasmi, see Kularnava IX. 32 and ib. 41. So'hambhavena pujayet. The Mantra "all this is surely Brahman (Sarvam khalvidam Brahma)" is according to the Mahanirvana (VII. 98) the end and aim of Tantrika Kulacara, the realization of which saying the Prapañcasara Tantra describes as the fifth or Supreme State (Ch. XIX); for the identity of Jivatma and Paramatma is Liberation which the Vedantasara defines to be Jivabrahmanoraikyam). Kularnava refers to the Advaita of which Shiva speaks (Advaitantu shivenoktam I. 108. See also Mahanirvana II. 33-34; I II. 33-35; 50-64; Prapañcasara II, XI X, XXIX). Gandharva Tantra says that the Sadhaka must be a nondualist (Dvaitahina). (See Ch. II. ib. Pranatoshini 108; Maharudrapamala I Khanda, Ch. 15; II Khanda, Ch. 2). It is useless to multiply quotations on this point of which there is no end. In fact that particular form of worship which has earned the Shakta Tantras ill-fame claims to be a practical application of Advaitavada. The Sammohana Tantra (Ch. VIII) gives high praise to the philosopher Samkaracarya saying that He was an incarnation of Shiva for the destruction of Buddhism. Kaulacarya is said to properly follow a full knowledge of Vedantic doctrine. Shiva in the Kularnava (I. 110) says "some desire dualism (Dvaita), others nondualism (Advaita) but my truth is beyond both (Dvaitadvaitavivarjita)". Advaitavedanta is the whole day and life of the Shakta Sadhaka. On waking at dawn (Brahmamuhurta) he sits on his bed and meditates "I am the Devi and none other. I am Brahman who is beyond all grief. I am a form of Saccidananda whose true nature is eternal Liberation." Aham Devi na canpo'smi, Brahmaivaham na sokabhak, Saccidanandarupo'ham nitpamuktasvabhavavan. At noon again seated in Pujasana at time of Bhutasuddhi he meditates on the dissolution of the Tattvas in Paramatma. Seeing no difference between Paramatma and Jivatma he affirms Sa'ham "I am She". Again in the evening after ritual duties he affirms himself to be the Akhilatma and Saccidananda, and having so thought he sleeps. Similarly (I may here interpose) in the Buddhist Tantra -- the Sadhaka on rising in the state of Devadeha (hLayi-sku) imagines that the double drums are sounding in the heavens proclaiming the Mantras of the 24 Viras (dPahvo), and regards all things around him as constituting the Mandala of himself as Buddha Vajrasattva. When about to sleep he again imagines his body to be that of Buddha Vajrasattva and then merges himself into the tranquil state of the Void (Shunyata). Gandharva Tantra says: "Having saluted the Guru as directed and thought 'So'ham' the wise Sadhaka, the performer of the rite should ponder the unity of Jiva and Brahman." Gurun natva vidhanena so'ham iti porudhasah Aikyam sambhavayed dhiman jivasya Brahmano 'pi ca. Kali Tantra says: "Having meditated in this way, a Sadhaka should worship Devi as his own Atma, thinking I am Brahman." Kubjika Tantra says (Devi is called Kubjika because She is Kundali): "A Sadhaka should meditate on his own Self as one and the same with Her (Taya sahitam atmanam ekibhutam vicintayet)" and so on. The cardinal doctrine of these Shakta Tantras is that of Shakti whether in its Svarupa (that is, as It is in Itself) as Cidrupini, the Paraprakriti of Paramatma (Mahanirvana IV. 10) or as Maya and Prakriti (see as to the latter the great Hymn to Prakriti in Prapañcasara, Ch. XI). Shakti as the Kubjika Tantra says (Ch. I) is Consciousness (Caitanyarupini) and Bliss (Anandarupini). She is at the same time support of (Gunashraya) and composed of the Gunas (Gunamayi). Maya is however explained from the standpoint of Sadhana, the Tantra Shastra being a Sadhana Shastra, and not according to the Mayavada, that is, transcendental standpoint, of Samkara. What is there in the great Devi Sukta of the Rigveda (Mandala X, Sukta 125) which the Shakta Tantra does not teach? The Rishi of this revelation was a woman, the daughter of Rishi Ambhrina. It was fitting that a woman should proclaim the Divine Motherhood. Her Hymn says: "I am the Sovereign Queen the Treasury of all treasures; the chief of all objects of worship whose all-pervading Self all Devatas manifest; whose birthplace is in the midst of the causal waters; who breathing forth gives form to all created worlds and yet extends beyond them, so vast am I in greatness." (The full Hymn is translated in the French Edition of A. and E. Avalon's Hymns to the Goddess, Bossard, Paris.) It is useless to cite quotations to show that the Shakta Tantra accepts the doctrine of Karma which as the Kularnava (IX. 125) says Jiva cannot give up until he renounces the fruit of it; an infinite number of universes, and their transitoriness (Mahanirvana III. 7), the plurality of worlds, Heaven and Hell, the seven Lokas, the Devas and Devis, who as the Kulacudamani Nigama (following the Devi-Sukta) says (Ch. I) are but parts of the great Shakti (Shaktanandatarangim III). Being Advaitavada, Moksha the state of Liberation and so forth is Paramatma. It accepts Smriti and Puranas; the Mahanirvana and other Tantras saying that they are the governing Shastras of the Treta and Dvapara ages respectively, as Tantra is that of the Kaliyuga. So the Tarapradipa (Ch. I) says that in the Kaliyuga, the Tantrika and not the Vaidika Dharma is to be followed. It is said that in Satya, Veda was undivided. In Dvapara, Krishnadvaipayana separated it into four parts. In Satya, Vaidika Upasana was Pradhana, that is, prevailed; Sadhakas worshipping Indra for wealth, children and the like; though Nishkama Rishis adored the Sarvashaktiman (Devisukta is Advaitasiddhipurna). In Treta, worship according to Smriti prevailed. It was then, that Vashishtha is said to have done Sadhana of Brahmavidya according to Cinacarakrama. Though in the Dvapara there was both Smriti and Purana, rites were generally performed according to the Puranas. There was also then, as always, worshippers of the Purnashaktimahavidya. At the end of Dvapara and beginning of the Kali age the Tantra Shastra was taught to men. Then the ten Samskaras, Shraddha and Antyeshtikriya were, as they are now, performed according to the Vaidikadharma: Ashramacara according to Dayabhaga and other Smriti Texts; Vratas according to Purana; Disha and Upasana of Brahman with Shakti, and various kinds of Yoga Sadhana, according to the Agama which is divided into three parts Tantra (Sattvaguna), Yamala (Rajoguna), and Damara (Tamoguna). There were 64 Tantras for each of the three divisions Ashvakranta, Rathakranta, Vishnukranta. http://www.dhyansanjivani.org/tantra_mantra_yantra/tantrashastra_and_veda.asp