Hello Old Friend lyrics

Paris rooftops were lovely to see
Switzerlands vertical landscape
Crossed my minds eye just now
Canadas shoreline has been calling out to me
But its been too long a time
Since last I crossed
That vast nantucket sound

Refrain
Hello old friend
Welcome me home again
Well, Ive been away
But thats all over now
Say I can stay for october, now
Stay a while and play

Little dog david
I must look like a fool
I shouldve remembered
Youd be forgetting my smell, well
Give me a week or two to recapture my cool
Ive got stories to tell
About how I snatched the devils catch
And out ran the hounds of hell

Refrain

Submitted by Guest

What do you think is the meaning of Hello Old Friend by James Taylor?