Catholic, Orthodox report promising progress on unity

This is really cool!  Everything else I've read suggests that unity is long way off, so probably the people directly involved in these talks are too optimistic, but still it's lovely to read:

"There are no clouds of mistrust between our two churches," Orthodox Metropolitan John Zizioulas of Pergamon told a news conference. "If we continue like that, God will find a way to overcome all the difficulties that remain."

Did Cardinal Ratzinger or somebody say that when it comes to Catholics and Orthodox, there's nothing lacking for unity except unity?  I can't find the quote.