The fundamental teaching of Hinduism, or Vedanta, is that a human being's basic nature is not confined to the body or the mind. Beyond both of these is the spirit or the spark of God within the soul. This spirit is within us and also within everything we see. All beings and all things are really, in their deepest essence, this pure or divine spirit, full of peace, full of joy and wisdom, ever united with God. This is not just theory, but it can actually be experienced. Anyone who takes the trouble to undergo the necessary training to purify and refine the mind and senses can begin to feel the truth of this. This training can take various forms and is known as yoga ("union"- union of the individual self with this inner spirit).