We can only perceive the outer world through the 5 senses of sight, smell, sound, touch and taste. There is a sixth most important sense of feelings, the heart principle or Chitta intuition.
Meditation gets us in touch with the sixth more powerful sense which comes from the larger universe and has no connection with the 5 material senses. It is this sixth sense that is the key to the inner universe, the Atman, the Soul. It connects us with the spirit of existence.
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