William Jame's Principles of Psychology Vol. 1, page 121. Talks about a train crash and a caged tiger walks outside of the cage and then goes back inside his cage. here
Aaron used that as a platform for the rest of the stories and themes. But, I'd like to know where he got the ideas for the rest of the animals behaviors and what animals to use.
In the Brother, Sister "era" he focused a lot on living as lowly as possible, doing things like dumpster diving and having no possessions and a lot Asian concepts like not having a "self" or not being able to define things. It's All Crazy! borrowed a lot from Bahai faith and teachings. Spiritually, where is Aaron at now?