»of rivers and religions« is a record/tape/cd (for all i know) of guitar music by john fahey, who died last spring ('01).
rivers have many sources. some start as snowmelt, others spring up from underground aquafers through fissures in the earth. some legends have it that certain rivers were created by a hero's or heroine's tears.
»you never step twice into the same river.« this can be seen as a meta for [answer goes here]