Possible Clues:

• Cultured American author carrying bed in Paris
• Like someone who writes thank-you notes
• Around fifty-one the poet may get around to being courteous
• Well-behaved author's on fire inside
• Courteous man from Warsaw, say, embracing Italian
• Showing regard
• Having good manners, socially correct
• (Of society) refined
• Pleasant
• Considerate, cultured