Vedas means divine wisdom. Divine wisdom is divided into 4 parts viz. Rig, Yaju, Saam and Atharva. Rig encompasses well-being, attaining God, performing ones duty, love, austerities, compassion, helping others, generosity, service, vision of God, divinity, soul peace, divine creativity, sense of righteousness etc. Yaju encompasses daring, hard work, valour, bravery, protection, attack, leadership, name/ fame, victory, status etc. Saam encompasses play, merriment, joy, art of music, literature, touch, the gross objects of the 5 senses & cogitation over them, imagination of what one adores, movement, attraction, contentment etc. Atharva encompasses wealth, glory, gathering of objects, scriptures, herbs, food, clothes, ores, house, vehicles etc.
All these 4 types of wisdom are manifestations of that very conscious energy which was created by Brahmaji at the beginning of creation of this world and which was labeled as Gayatri by scriptural scholars. In this manner, Gayatri is the Mother of the 4 Vedas. Hence she is called Vedmata. Just as the element water has 4 forms viz. ice, steam (clouds, fog etc.), wind (hydrogen /oxygen) and flowing water (rivers etc.) and just as the element fire is experienced variedly like burning, heat, light and movement in the same way Wisdom Gayatri manifests in 4 forms of the 4 Vedas. If Gayatri is a Mother then the 4 Vedas are her sons.
So far we have elucidated the subtle nature of Gayatri as Vedmata. Now let us cogitate upon Gayatris gross form. Brahmaji via the 4 Vedas created the 24-lettered Gayatri Mantra. Every letter of this single Mantra has a subtle divine principle which when activated manifests the branches, sub-branches of the 4 Vedas. A tiny seed of a Banyan tree has a gigantic Banyan tree subtly embedded in it. When this seed is sown, it starts growing into a gigantic tree with many branches, sub-branches, leaves, fruits etc. It is gigantic when you compare it to the size of the tiny, miniscule seed from which it has grown. This holds true for the 24 letters of Gayatri because they can be compared to the abovementioned seed. When these seeds of Gayatri sprout forth, they manifest as the gigantic Vedas.
Indian philosophy believes that the beginningless God created all this via Brahmaji. As soon as the thought of creating this world appeared in the psyche of Brahma, there was a simultaneous manifestation of Shakti (Divine Energy). Via this Shakti, 2 types of worlds were created wherein one was inert and the other was conscious. That Shakti which is responsible for the propagation of the inert world is called Prakriti (Mother Nature) and that Shakti which is responsible for creation of a conscious world is called Savitri.
Two Shaktis are at work in creation of Brahmajis inert /conscious worlds viz. 1) Sankalp Shakti (power of resolve) 2) Parmanu Shakti (atomic energy). But at first it was Sankalp Shakti that was made use of because without that, a conscious world can never be created. And without consciousness, how can atomic energy be utilized? The inert world was by itself inert because neither can anyone know about it nor is it of any use. For the ease of manifesting consciousness, inert materials are used as its means of creation.
Gods wife is nothing but consciousness, desire, vibration. In this manner Brahmaji (God) became 2 from 1. Now God was called LakshmiNarayan, Seetaram, RadheyShyam, Uma-Mahesh, ShivaShakti, MayaBrahman, PrakritiParameshwara etc.
Via this Shakti (Energy) many materials and living beings were to be created. Hence it had to partition itself into 3 parts so that it could be mixed in various ways. Thus could various objects be created via various Gunas, actions, natures of both the inert and conscious varieties. The 3 parts of Gods Shakti are the 3 Gunas called 1) Satva 2) Rajas 3) Tamas. Sattva means the Divine Principle of God. Rajas means the admixture of inert objects and its opposite divine principles which lead to bliss oriented consciousness. Tamas means the existence of atoms in lifeless / inert objects. These 3 principles are the root cause of this gross, material world. Over and above these, the gross materials used to create this world are mind, water, wind, fire, space. The visible world works via the Tanmatras of the 5 elements mentioned above called sound, form, taste, smell and touch. Nature has 2 parts viz. subtle Prakriti (nature) which is an energy (Shakti) flow and the second is the flow of the vital force (or Prana). It encompasses Sattva, Rajas and Tamas (the 3 Gunas). The gross nature via which the visible world is created and made use of is essentially atomic in nature. It makes use of the 5 elements viz. earth, water, fire, wind and space.
From the above sentences the readers must have clearly understood that initially there was one Brahman (God or all-pervading soul) and from that manifested Adi Shakti (Primordial Divine Energy). This Adi Shakti is called Gayatri. Brahman divided itself into 3 categories 1) Sattva which is Hreem or Saraswati 2) Rajas called Shreem or Lakshmi 3) Tamas called Kleem or Kali. In reality there were only 2 categories of Brahman in the form of Sattva and Tamas and an admixture of these 2 gave rise to Rajas. It is like the Indian Rivers Ganga and Jamuna uniting to form Saraswati river. In reality Saraswati is not a separate river. Just as the union of Ganga and Jamuna results in Saraswati, in the same way an admixture of Sattva and Tamas results in Rajas. This is thus the 3-fold Prakriti (nature) of God.
One hears of the quarrel regarding Advaitvad (Monism), Dvaitvad (Dualism), Traitvad etc. Yet on analysis of all these isms one realizes that it is only a difference in ones perception of it. Brahman (God), Jeeva (living being) and Prakriti (Mother Nature) all exist in this world. Initially there was one Brahman & hence Advaitvad is true. Then Brahman manifested Shakti (nature) and hence Dvaitvad too is correct. And then the union of Brahman and Shakti manifested Jeeva i.e. an admixture of Sattva (consciousness) and Tamas (inertness) lead to Rajas (Jeeva). Thus Traitvad too is correct. When one attains salvation (Mukti) the Jeeva (living being) no longer exist. From this it is clear that the existence of a living being which is dependent on the mind, intellect, psyche and ego is merely an admixture.
This is not the right time to seriously enter the subject of spiritual philosophy and throw light on the nature of the soul. In this section we wanted to depict the differences between gross and subtle nature (Prakriti) because it is from here that Science gets categorized into 2 parts. It is from here that the dual nature of mankind commences. All those individuals who conduct research on gross nature, made up of the 5 elements viz. earth, water, fire, wind and space are called material scientists. All of them via their intellectual prowess understood the differences lying in these 5 elements and thus invented material comforts. These material comforts are chemicals, agriculture, electricity, steam, sculpting, music, language, literature, vehicles, home-making, medical cures, political power, astronomy, scriptures, weapons, philosophy, geological attainments etc. In this manner they invented useful (materially) machines for railways, cars, post, radio, television, photos, computers etc. Thus material comforts like wealth, relaxation were created. Our scriptures label all the benefits from this path as and Bhoga (sense pleasures). This Science is called Material Science. This Science involves utilization of gross nature.
Subtle nature (Prakriti) is that which after manifesting from Adi Shakti Gayatri gets categorized into Saraswati, Lakshmi and Durga. These all-pervading Shaktis are infinite fold more subtle than the 5 gross elements. Just as when wind contacts the water flow in a river which results in a gurgling sound, in the same way 3 types of sound vibrations emanate from the Shakti flow of subtle nature. From the Sattva flow emanates the sound Hreem, from Rajas Shreem and from Tamas Kleem. More subtle than these sound vibrations is the sound of Om in Brahman (God). Spiritual seekers who practise the path of sound vibration meditation called Naadyoga can actually hear the subtle sound vibrations. Thus they go beyond the shackles of subtle nature and ultimately merge in Brahman (God).