I want to know the answer to the following question:
What was the soul according to Avicenna?
All the background I'm provided with is that "While he was imprisoned in the castle of Fardajan near Hamadhan, Avicenna wrote his famous "Floating Man" – literally falling man – thought experiment to demonstrate human self-awareness and the substantiality and immateriality of the soul.". Is that enough to answer the question?