The shape of heart symbolizes romantic love and affection. This symbol has been known for many cultures since the ancient times, and today everyone is able to understand its meaning properly. It is interesting that the symbol researchers have not managed to solve the mystery of the symbol’s origin. Its shape does not resemble the human’s heart, but it is very similar to the heart of … a turtle. However, it is very unlikely that this symbol comes from the turtle’s heart. One of the most probable hypotheses states that it is the shape of the leaves of the extinct plant called silphion, which was used in the amorous magic in the ancient times. This is the probable reason for which love has been expressed in the form of this well-known symmetrical shape to this day.