'I beg your pardon for interrupting you, sir,' returned Bitzer; 'but I am sure you know that the whole social system is a question of self-interest.
"Barka iezadazu hitza mozten badizut, jauna" erantzun zuen Bitzerrek; "baina ziur nago badakizula sistema sozial osoa norberaren onbeharraren kontua dela.