Filius philosophorum
The filius philosophorum is a symbol in alchemy. In some texts it is equated with the philosopher's stone, but in others it assumes its own symbolic meanings. Other terms for the filius philosophorum include filius sapientiae, infans noster, infans solaris, infans lunaris, and infans solaris lunaris.
There are several images that have been used to represent the filius philosophorum. Among these are the transformed hermaphroditic Hermes, the child of the Red King and the White Queen, the child of the egg, and the three-fathered Orion.
The filius philosophorum was also one of the Jungian archetypes analyzed by the Swiss psychologist.