Aryan established all their religions, philosophies, laws, letter and arts on Vedas.
The Upanishads and Sutras, which are moral and philosophy of Hinduism, are vast commentaries on early texts based on their religion.
We call improperly philosophy to Vedic wisdom, but we use these terms for a clear understanding by students of Occident.
To call philosophy to the divine wisdom of the Vedas is like to call a world of stars to the universe.
Indian philosophy neither names nor refers to the absolute principle existing beyond any principle; the Buddha is the luminous exemplar of this modality in those ancient masters of India, for constantly he refused to speak of the beginning of the INFINITE.
The idea about the Absolute One, the idea about God, is the substratum of whole human mind.
But throughout the ages, and even simultaneously, Humanity considered the Absolute One from diverse points of view.