The ancient Egyptians believed that the heart, rather than the brain, was the source of human wisdom, emotions, memory, and the soul itself. Concepts of illness were related to the heart, and it was believed that the divine spoke and created life through the heart.
The Sanskrit word for Heart, Hridayam (hrit + ayam), means "this is the center.” In Yogic traditions, balance and bodily equilibrium is attributed to the heart, and the heart is considered to be the internal guide (inner guru). The Nadis (channels) that carry Prana (life force energy) emanate from the Atma dwelling in the heart. The classical Ayurvedic Text, the Charaka Samhita, details the heart's physiology and energetic qualities, and the heart is referred to as "the seat of consciousness".
“In ancient Judaic tradition, The Kabbalah reveres the heart center, one of the Sefirot (channels of life-force) as the Central Sphere and the access point to truth, beauty, joy & health.
The ancient Islamic mystic path of Sufism (Tasawwuf) focuses on awakening the heart, the source of divine wisdom. To this day, many of us are still inspired by Sufi Poet & mysic Rumi's profound heart-centered writings.
In the Hebrew Bible & Christian Old Testament, the book of Proverbs refers to the heart as a source of wisdom, creation and access to the divine source as well: "For as he thinketh in his heart, so is he" (Proverbs 23:7); "Above all else, guard your heart, for everything you do flows from it." (Proverbs 4:23); "A cheerful heart is good medicine, but a crushed spirit dries up the bones." (Proverbs 17:22)
In Traditional Chinese Medicine, The heart is considered to be the seat of connection between the mind and body, as well as the house of the spirit (Shen). TCM practitioners measure the quality and nature of the pulse to glean insight into the emotional, energetic and physiological state of their patients.
More research & attention is being paid to the heart each day as we collectively attune to this awareness.