YOGA is a system. A holistic system of refining the body, the mind and the spirit in unison.Ultimately, it is well-being, peace, and bliss.
The Yoga system, unlike the Samkhya, is not a theoretical system that tries to give answers to metaphysical questions. Its preoccupation is not based in studying the origin or the cause of the association between matter and Self. It finds these speculations without sense and possible answers in a world and a being –human being–, limited by the time, the space and the very intelligence tied to the matter.
Its departure point is the concrete, historical human being, in a world already in movement from all the eternity. Moreover, it starts from present situation, of ignorance, in that is the practicing (and in whom we were all), accepting like real what our senses perceive, but remembering always that the internal observer can contemplate such reality of very different form once reached the liberation; consequently, apparently the biggest absurd and contradictions can occur, disappearing with them the metaphysical questions that considered at the beginning.