The heads of Europe's biggest economies meet Sunday to try and forge a common position on the global financial crisis despite simmering disagreements over the way forward.
"The violence of the (economic) crisis, its depth, call for really profound changes. We have to start capitalism again from scratch, make it more moral... that is why I want to see a real response (in Berlin)," Sarkozy said.
"There should be no more gaps" in international controls of financial products, the head of Europe's largest economy [Merkel] said in her weekly video message.
Prime Minister Gordon Brown said this week the world would see "unprecedented cooperation" over the next few months in addressing the financial crisis.
He has already called for a world leaders to strike a "grand bargain" to help the recession-mired global economy.
"Banks must act in the long-term interests of their shareholders and therefore of the economy as a whole, not in the short-term interests of bankers," Brown wrote.
"That has to be the foundation on which a new system must be based."
He advocated a rejection of "short-term bonus culture", stronger governance in banks, and better national and international regulation.