The human soul is an essence spiritual in entity and material or physical in function. It is defined as essence because it is independent in itself, while the body is accidental and dependent upon the soul.
(‘Abdu’l-Baha, from a talk, quoted by Lua Getsinger in her talk in San
Francisco on December 17, 1911)(To see the transcript of the entire talk please
visit Baha’i Talks, Messages and Articles)