A soul was an aspect of an individual. It was said that one's eyes were a window into their soul. The soul of the varactyl beast was described as simpler and purer than that of a sentient. Despite this, the creature was still intelligent in its own way. A neural core was understood as effectively the soul of a droid.
According to the Poetics of a Jedi text written by Jedi Master Lyr Farseeker, the heart of a Jedi could move souls. Former Tempest Runner Pan Eyta believed the dark eyes of Marchion Ro, a member of the Evereni species, looked soulless. The late veteran Admiral Gial Ackbar's son, Aftab Ackbar believed that his soul was in the Mourning Shrines on Mon Cala, while visiting with General Leia Organa.
- Star Wars: The Visual Encyclopedia
- The Star Wars Book
- Star Wars: The Secrets of the Sith