Published in IJCP August 2021
Spiritual Update
The Spiritual Heart: Your Heart and My Heart Are One
August 14, 2021 | IJCP

Tat tvam asi” is a mahavakya in the ancient Sanskrit texts of the Upanishads. It translates as “I am that” and means “You and I are same” or “your heart and my heart are one”.

Whenever we point to our own self, we put our hand on our heart; we also put our hand on our heart when we say “I love you from the bottom of my heart”.

Does the consciousness reside in the celiac plexus (Manipura chakra) or thymus plexus (Anahata chakra)? We do not know. Manipura chakra is associated with fire and the power of transformation. The Anahata chakra manifests unconditional love, forgiveness and patience.

Our ancient scriptures and the Bible say that the heart is the size of a thumb and it is in the heart that our consciousness (soul) resides.

  1. In Svetasvatara Upanishad (5.8, 5.9). “Soul is the size of a thumb, bright as the sun, when coupled with conception and ego. But with only the qualities of understanding and soul, it appears the size of the point of an awl. This life is the hundredth part of the point of a hair divided a hundred times, and yet in it is infinity”. Here the sruti is speaking metaphorically, because actually the soul is atomic in size. Therefore in the next verse (Svet. U. 5.9) the soul is compared to a fraction of the tip of a hair. These comparisons are meant to indicate that the individual soul is atomic rather than all-pervasive.
  2. According to Vedanta Sutra, the idea that God resides in the physical heart the size of the thumb is for the sake of conceptualization during meditation, and is thus a metaphorical description. The size of the thumb refers to the size of the human heart. God is in reality all pervading and atomic at the same time.
  3. Atharva Veda: The soul is a particle of God.
  4. Jain metaphysicists refer to it as of varying sizes, small in a child, big in adults and old people and very big in elephants.
  5. Nemi Chandra in Dravyasangrah-2: Soul is characterized by knowledge and vision, has the same extent as its own gross body.
  6. Katha Upanishad (1.2.20): Spirit, the size of a thumb “angush matra”, is the inner soul, always seated in the heart of creatures.

Katha Upanishad Part Fourth XII. The Purusha (Self), of the size of a thumb, resides in the middle of the body as the lord of the past and the future, (he who knows Him) fears no more. This verily is That. The seat of the Purusha is said to be the heart, hence it “resides in the middle of the body.” Although it is limitless and all–pervading, yet in relation to its abiding–place. It is represented as limited in extension, “the size of a thumb”. This refers really to the heart, which in shape may be likened to a thumb. Light is everywhere, yet we see it focused in a lamp and believe it to be there only; similarly, although the life-current flows everywhere in the body, the heart is regarded as peculiarly its seat.

  1. Garuda Puran: Ultimately, the soul, which is not more than the size of a thumb, reluctantly comes out from the body as the attachment with the world exists even after his.
  2. Gaudiyaacharya Sri Baladeva Vidyabhusana in his Govinda Bhasya commentary on the Vedanta Sutra (1.2.7, 1.3.24-25.): During meditation Paramatma does appear to the yogi or devotee as a localized form in his heart, but in general Paramatma is all-pervasive and all-knowing.
  3. Unknown: According to some Vedic scholars the soul enters the human form like 4-8 weeks after conception, like when the fetus is the size of a thumb.
  4. Bhagavad Gita 15.15: “I (soul) am seated in everyone’s heart, and from Me come remembrance, knowledge and forgetfulness. By all the Vedas, I am to known. Indeed, I am the compiler of Vedanta, and I am the knower of the Vedas.”
  5. Vedanta Sutra II, 6, 17: The person of the size of a thumb, the inner Self, is always settled in the heart of men. Let a man draw that Self forth from his body with steadiness, as one draws the pith from a reed. Let him know that Self as the Bright, as the Immortal.
  6. Swami Muktananda, Play of Consciousness, p. 85: “The whole body is like a lotus which has four petals of four kinds, colors and sizes....The first is the gross body, its color is red. The second petal is the subtle body, in which we sleep and experience dreams. It is the size of a thumb, and its color is white. The third petal is the causal body. It is the size of the tip of third finger, and its color is black. The fourth petal is the supracausal body, which is as small as a sesame seed. Its color is blue.... It is very brilliant; it is the foundation of sadhana; it is the highest inner vision.”
  7. Matthew 5; 8: Soul resided in the heart: “Blessed are the pure in heart, for they shall see God.”