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When you think of a heart, you likely picture the sweet little symbol that is seen in illustration, homewares and emojis.

But the heart hasn't always just been a symbol of romance. Across cultures and centuries, the heart has been revered as the seat of the soul, a source of supernatural power and a vessel of identity.

He concludes that the enduring nature of the symbol relates to a religious connotation of man's cleaved heart as a creation of God, and to the spiritual connotation of the heart as an empty vessel ...