Greece made little immediate progress in its quest for more time to carry out painful cuts during talks between its Prime Minister Antonis Samaras and Germany's Chancellor Angela Merkel today.
But the German leader did offer some support to the stricken country.
She stressed that Berlin wanted to keep Greece in the euro and that it will not rush to make any premature judgements about its reform efforts.
In German and French media this week, Prime Minister Antonis Samaras has been arguing that his country should have more time beyond the mid-2014 deadline to complete reforms that are a condition of it continuing to receive bailout loans.
Without the help, Greece would be forced into a chaotic default on its debts and could be forced out of the euro zone.
Leading German politicians have voiced deep skepticism about granting Greece any concessions.
Mrs Merkel and French President Francois Hollande, meeting a day before Samaras came to Berlin, put the onus squarely on Greece to fulfill its pledges.
Athens has faltered in the speed and effectiveness of implementing the reforms - irritating creditors, notably Germany, which is the single largest contributor to its €240 billion bailout packages.
Weeks of political wrangling in Greece that ultimately brought a coalition government under Samaras to power didn't help.
Greece's continued access to the bailout packages hinges on a favorable report next month from the so-called "troika" of the country's debt inspectors - the European Union, European Central Bank and the International Monetary Fund. If Greece is found to have failed on key economic reforms that are conditions of the bailout loan, vital funds could be halted.
"To win back confidence, we must fulfill expectations, and so I made clear in the talks that we of course expect from Greece that the commitments that were made be implemented, that deeds follow words," Mrs Merkel said after meeting Samaras.
"But fulfilling expectations also means that Greece can rightly expect from Germany that we do not pass premature judgments," Mrs Merkel said, adding that Germany needs to wait for the debt inspectors' report.
Mrs Merkel did not address Mr Samaras' hopes of winning more time to carry out reforms, which he reiterated at today's joint news conference, emphasizing that stimulating economic growth is a priority.
"We don't want more aid, we did not ask for more money; but we need time to breathe - it is a big leap that Greece is making," he said. He did not specify how long that "time to breathe" might be.
Germany's finance minister has argued that giving Greece more time would not solve the country's problems, and the parliamentary caucus leader of Merkel's conservative bloc poured more cold water on the idea today.
Both question Mr Samaras' assertion that giving Greece more time does not have to mean giving it more money.
And Mrs Merkel would need approval for any extra funding in Parliament, where lawmakers in her center-right coalition have no appetite for another Greek rescue program.
Mrs Merkel said there are "two realities" that need to be reconciled by European leaders.
In Greece, she said, there is the perspective of having suffered through years of recession and being asked now for more painful cuts. "And then there's the other reality expressed by many in Germany that we have for more than two years guaranteed programs, support and a lot of money for Greece and it always comes to that point where what we have expected has not happened, and from that has grown a lot of impatience."
Some German politicians have talked openly about the possibility of Greece leaving the euro. The vice chancellor, Economy Minister Philipp Roesler, has said the idea of a Greek exit has "lost its horror."
However, Merkel repeated today that Germany wants Greece to keep the shared currency.
"I want to say very clearly here ... (and) this is also the aim of the entire German government, that Greece is a part of the eurozone and I would like Greece to remain part of the eurozone," she said.
Today's meeting "was a good beginning, but it also became clear in the talks that there is a lot to do," Mrs Merkel said.
Greece "will stay true to its commitments," Mr Samaras insisted. "To be precise, we are already doing so. I am convinced that the report of the troika will signal that the new coalition government in Greece will soon lead to results."
Mr Samaras will meet Mr Hollande in Paris on Saturday. Continuing a round of financial diplomacy, Merkel will meet next Wednesday with Italian Premier Mario Monti, whose country is struggling with high borrowing costs.
Earlier today, the parliamentary leader of Mrs Merkel's conservative bloc said he was "very skeptical" about giving Greece more time. "My position is that neither the time nor the position in substance can be renegotiated; Greece must now fulfill its duties," Volker Kauder told ZDF television.
Asked whether the euro would fail if Greece leaves, Kauder replied that rescue funds are in place to help prevent contagion of other countries, so "I would say that this wouldn't be a problem for the euro."
Mr Samaras said it time for an end to talk about Greece leaving the euro.
"Can there be any businessman who invests in this country if he knows that he will invest in euros and get drachma back? No," Samaras said.
"You can imagine that this cacophony ... creates such big problems that one has the impression of fighting for nothing."
