The Vedas are considered the earliest literary record of Indo-Aryan civilization, and the most sacred books of India. They are the original scriptures of Hindu teachings, and contain spiritual knowledge encompassing all aspects of our life. Vedic literature with its philosophical maxims has stood the test of time and is the highest religious authority for all sections of Hindus in particular and for mankind in general.
They are arguably the mother of all scriptures. They form the bedrock of the universal religion or "Sanatana Dharma" that all Hindus follow. The Vedas have guided our religious direction for ages and will continue to do so for generations to come. And they will forever remain the most comprehensive and universal of all ancient scriptures.
"Veda" means wisdom, knowledge or vision, and it manifests the language of the gods in human speech. The laws of the Vedas regulate the social, legal, domestic and religious customs of the Hindus to the present day. All the obligatory duties of the Hindus at birth, marriage, death etc. owe their allegiance to the Vedic ritual. They draw forth the thought of successive generation of thinkers, and so contain within it the different strata of thought.

Das,
Any society requires a “constitution” to survive, be it Stalinism, Maoism, Capitalism etc.. Vedas serve a similar purpose they are the “Constitution” for entire creation.
Rajesh.