
If you pick up a starving dog and make him prosperous, he will not bite you; that is the principal difference between a dog and a man.
Pudd'nhead Wilson ; and, Those extraordinary twins - Volume 16, Página 158 http://books.google.com.br/books?id=uotUdEgrDigC&pg=PA158, Mark Twain, Forgotten Books, 1923, ISBN 1440031959, 9781440031953 - 295 páginas