When man is serene, the pulse of the heart flows and connects, just as pearls are joined together or like a string of red jade, then one can talk about a healthy heart. – The Yellow Emperor’s Canon of Internal Medicine, 2500 B.C.

The ocean of the body crashes against the ocean of the heart. Between them is a barrier they cannot cross. – Rumi

The heart is the perfection of the whole organism. Therefore the principles of the power of perception and the soul’s ability to nourish itself must lie in the heart. – Aristotle