Pope Benedict (pictured) has hit out at unbridled capitalism in his new year's message.
He lauded the world's peacemakers, but warned against following the "pursuit of false peace" through liberalising abortion or legislating euthanasia and gay marriage.
"There is also a need to acknowledge and promote the natural structure of marriage as the union of a man and a woman in the face of attempts to make it juridically equivalent to radically different types of union," he said.
"Such attempts actually harm and help to destabilise marriage, obscuring its specific nature and its indispensable role in society."
The Pope's full message also included calls for renewed focus on the world's food crisis and a new economic model and ethical regulatory structures to keep currency, financial and commercial markets from being harmful to the poor.