This structure of concepts is formally called a hierarchy and since ancient times has been a basic structure for all Western knowledge.
Zen & the Art of Motorcycle Maintenance - Robert M. Pirsig
Abstract principles are general - they apply in many universes, with many different kinds of actors. They are substrate independent:
The imperfectable training
Concrete principles are specific and limited - they apply to our universe and the human condition.
What it’s like to be us
This philosophy is specific to being human. There is no attempt to search for absolute truths or immortal principles. This philosophy addresses the reality of what its like to be the human animal:
Strategies for moving through the world