The courtesy which most becomes a victor was denied to Germany for a long time.
Gustav Stresemann
Courtesy is a lady's armor.
Sophie Turner
Courtesy is the one coin you can never have too much of or be stingy with.
John Wanamaker
No one is more insufferable than he who lacks basic courtesy.
Bryant H. McGill
I have often seen people uncivil by too much civility, and tiresome in their courtesy.
Michel de Montaigne