William Harvey demonstrated that the heart is a pump that drives the blood to circulate around the body, and that is what is scientifically known today. Emotions come from the brain. In ancient times and until the time of Harvey, the heart was thought to be the human organ from which emotions came. References to this concept are found in many documents, including the Egyptian Book of the Dead, the Hebrew Bible, the writings of the Greek philosopher, Aristotle and the Roman physician, Galen, and the Christian New Testament. Although scientifically we now know that the heart's function is to pump blood, symbolically we still associate the heart and its beautiful shape with love.
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