Philip has met an Englishman who introduces him to the Rubayat while they are walking with view of the Neckar.
My first German book had a verse at beginning of each
chapter. Heidelberg is where the Neckar river enters the
Rhine.
"Alt Heidelberg du feine Old Heidelberg, you (fine)
Du Stadt an Ehren reich You City rich in honors
Am Neckar und am Rheine On the Neckar and on the Rhine
Kein andre kommt dir gleich." No other equals you.