Hieroglyphics of Horapollo, tr. Alexander Turner Cory, [1840], at sacred-texts.com
When they would denote the heart they delineate the Isis; for this animal is consecrated to Hermes [Thoth],
the lord of every heart and of reasoning. The Ibis also is itself in its own shape like the heart, respecting which great discussions are maintained by the Egyptians.