Odin's symbol is the the Valknut, the symbol for creation, preservation, and destruction. "I know that I hung on a windy tree nine long nights, wounded with a spear, dedicated to Odin, myself to myself, on that tree of which no man knows from where its roots run." (Odin in the Havamal, a collection of Old Norse poems from the Viking age).
METAPHILOSOPHY [noun] also called philosophy of philosophy; the study of the nature, aims, and methods of philosophy. The term is derived from Greek word meta μετά (“after”, “beyond”, “with”) and philosophía φιλοσοφία (“love of wisdom”).