Yogam is not just the practicing of rituals out of blind belief. It also has a science to it, that we wish to summarize here.
Knowledge is evolved out of mind only. But the mind is both matter and not matter too. Material part is always nourished by material food and this part gives rise to bodily and worldly sense and knowledge. The other or spiritual part is a homogenous (uniform throughout) substance of the universal spirit. If you remove or burn the material part of mind, the individual finite sense of body and world will vanish and realize practically that the individual is nothing but
the universal Paramatma or Brahman, as he is remained with spiritual part alone.