Sia or Saa, an ancient Egyptian god, was the deification of perception in the Heliopolitan Ennead cosmogony and is probably equivalent to the "intellectual energies of the heart of Ptah in the Memphite theology." holding a papyrus scroll. This papyrus was thought to embody intellectual achievements.
The god personifies the perceptive mind.
Hieroglyph: Sia
The Sia (hieroglyph) was also used to represent "to perceive", "to know" or "to be cognizant".