Sit Down Young Stranger Lyrics

Lyric discussion by pixie dust 

Cover art for Sit Down Young Stranger lyrics by Gordon Lightfoot

It's beautifully sung; the lyrics seem to imply that a young man has returned home from travel and school and has different notions about the world than those held by his parents. It's sympathetic to the son and to the parents; he's young and idealistic, they are work weary and practical. I struggle with the last several stanzas, particularly the last two lines. Any suggestions?