“A civilidade nada custa e tudo compra.”
Civility costs nothing and buys everything.
The letters and works of Lady Mary Wortley Montagu - Vol. II, Página 299 http://books.google.com.br/books?id=1JAwpMWpAC4C&pg=PA299, de Mary Wortley Montagu, James Archibald Stuart-Wortley-Mackenzie Wharncliffe, William Moy Thomas, Louisa Stuart - Publicado por Henry G. Bohn, 1861 - 514 páginas