Mediums practice using the Upanidads
This Upanisad emphasizes the unity of cosmic consciousness and individual consciousness.
Knowledge which is eternal does not bring money in worldly life so that one may overcome death due to hunger and deprivation; and the knowledge which brings money in material life is not eternal. Therefore, the wise man not depending exclusively on either one while neglecting the other, should search harmony between the two kinds of knowledge (physics and metaphysics). Satisfaction of worldly necessities only is like death; the experience of cognitive trance (Samadhi) and Self-knowledge is attainment of Eternal Life.