Davis: [Asked to explain international commerce in a radio interview] Ah - well, the chief export from Portugal is - er - port, and the chief export of Brazil is - nuts. Well, now, the economic situation between port and nuts - that is to say between Portugal and Brazil, is that the Brazilians want to drink port with their nuts and the Portuguese want to eat nuts with their port; so the more the export of port from Portuguese ports which the Brazilian ports import - the greater the export of nuts which the Brazilian ports export and Portugal's ports import. Well, then - in other words - the people of Brazil are bound to grow more and more nuts.