Indian philosophy is highly sophisticated and very technical and surpasses in both in volume and subtlety."Sir William Jones was always impressed by the vastness of Indian literature.
The most important texts include the Vedas, Upanishads, the Puranas, the Epics - Ramayana, Mahabharata and the Bhagavad Gita. Hindus are the most thoughtful people, and their literature is characterized by constant concern with humanity's spiritual destiny.
In response to this concern they have created elaborate philosophical concepts and wrote great epic poems, narrative literature and fiction.
They brought out Dharma Sastras to guide man's conduct in society, Grihya Sutras to guide the conduct of house-holders, and a unique science, Meemamsa, prescribing sacrificial lore for the attainment of individual and national prosperity.
They codified the laws of sanitation, town-planning, architecture, sculpture and enunciated the principles of music, dancing, and the art of love.
From the Vedas they evolved the Upanishads, whose copious enquiries into the nature of man, the Universe, and God, strike us with speechless wonder.
Their intellectuals vying with each other, propounded six systems of philosophy explaining man, universe, and God, before which Aristotle's and Plato's theories look like juvenile endeavors, which fell flat on their own country-men.
He wrote: "I seek a light that shall be new, yet old, the oldest indeed of all lights...
I seek not science, not religion, not Theosophy but Veda - the truth about Brahman, not only about His essentiality, but about His manifestation, not a lamp on the way to the forest, but a light and a guide to joy and action in the world, the truth which is beyond opinion, the knowledge which all thought strives after - yasmin vijnate sarvam vigna - tam (which being known, all is known); I believe it to be the concealed divinity within Hinduism..." , - but a veil has to be drawn aside, a curtain has to be lifted. I believe the future of India and the world to depend on its discovery and on its application, not, to the renunciation of life, but to life in the world and among men.
Hindu philosophers have discussed at great lengths the science of Noetics.
Max Muller says: "In thus giving the Noetics the first place, the thinkers of India seem to have again superior to most of the philosophers of the West." The Vedas are not puerile babblings of rustic troubadours, but sedate out-pourings of exceptional minds in quest of God.
Sruti include the Vedas (Rig, Yajur, Sama and Atharva) and the Bhagavad Gita. Each of the four Vedas consists of four parts: Samhitas, Brahmanas, Aranyakas, and Upanishads.