Ayurveda is an ancient system of life (ayur) knowledge (veda) arising in India thousands of years ago. Ayurveda theory evolved from a deep understanding of creation. The great rishis or seers of ancient India came to understand creation through deep meditation and other spiritual practices. The rishis sought to reveal the deepest truths of human physiology and health. They observed the fundamentals of life, organized them into an elaborate system, and compiled India's philosophical and spiritual texts, called Veda of knowledge.