Abstract: The main classical books of ayurveda are Charak samhita, Susrut samhita, Ashtang Hridayam.Commonly we can say them "Vrihatrayi".Ayurveda is also called as "5 th veda".It means, ayurveda is an important part of "atharv veda". VedaVeda means science.A complete source which helps to know in a proper way.According to Ayurvedic philosophy an individual bundle of `spirit', desirious of expressing itself, uses subjective consciousness or Satwa to manifest sense organs and a mind.Spirit and mind then project themselves into a physical body, created from the five (Pancha) great (maha) eternal elements (bhutas)-together called the Panchamahabhutas -which arise from Tamas.The sense organs then using Rajas to project from the body into the external world to experience their objects.The body becoming the mind's vehicle, its physical instrument for sense gratification.The Bhutas combine into "tridoshas" or bioenergetic forces that govern and determine our health or physical condition.While the three gunas (Rajas or activity, Tamas or inertia and Satwa, which balances the first two) or psychic forces determine our mental and spiritual health.Ayurvedais thus a holistic system of health care that teaches us to balance these energies in order to achieve optimum health and well being. HistoryThe main source of knowledge in this field therefore remains the Vedas, the divine books of knowledge they propounded, and more specifically the fourth of the series, namely Atharvaveda that dates back to around 1000 BC.Ayurveda is the oldest surviving complete medical system in the world.Derived from its ancient Sanskrit roots -'ayus' (life) and 'ved' (knowledge)-and offering a rich, comprehensive outlook to a healthy life, its origins go back nearly 5000 years.To when it was expounded and practiced by the same spiritual rishis, who laid the foundations of the Vedic civilisation in India, by organising the fundamentals of life into proper systems.Of the few other treatises on Ayurveda that have survived from around the same time, the most famous are Charaka Samhita and the Sushruta Samhita which concentrate on internal medicine and surgery respectively.The Astanga Hridayam is a more concise compilation of earlier texts that was created about a thousand years ago.These between them forming a greater part of the knowledge base on Ayurveda as it is practiced today.The art of Ayurveda had spread around in the 6th century BC to Tibet, China, Mongolia, Korea and Sri Lanka, carried over by the Buddhist monks travelling to those lands.Although not much of it survives in original form, its effects can be seen in the various new age concepts that have originated from there.No philosophy has had greater influence on Ayurveda than Sankhaya's philosophy of creation and manifestation.Which professes that behind all creation there is a state of pure existence or awareness, which is beyond time and space, has no beginning or end, and no qualities.Within pure existence, there arises a desire to experience itself, which results in disequilibrium and causes the manifestation of the primordial physical energy.And the two unite to make the "dance of creation" come alive.Imponderable, indescribable and extremely subtle, this primordial energy-which and all that flows from its existing only in pure existence -is the creative force of all action, a source of form that has qualities.Matter and energy are so closely related that when energy takes form, we tend to think of it in terms of matter only.And much modified, it ultimately leads to the manifestation of our familiar mental and physical worlds.It also gives rise to cosmic consciousness, which is the universal order that prevades all life.Individual intelligence, as distinct from the everyday intellectual mind, is derived from and is part of this consciousness.It is the inner wisdom, the part of individuality that remains unswayed by the demands of daily life, or by Ahamkara, the sense of `I-ness'.