Polite

Definitions: (1) exhibiting warm cordiality; genteel; (2) courteously considerate; tactful; civil; (3) having the characteristics of advanced culture; refined in behavior or cultural interests <especially in arts and literature>

Compatible Quality: friendly

Quotes:
• Politeness is to human nature as warmth is to wax. — Arthur Schopenhauer (1788-1860) German philosopher
• I want maximum information given with maximum politeness. — Jacqueline Lee Kennedy Onassis (1929–1994) American First Lady