In statements to the MPs, Papandreou said that Greece had for the past two years been waging a battle "with great sacrifices for the Greek people that must be won" and stressed that there was no other path to follow.
"The other road is that of default, with major and grave repercussions for every household, every Greek man and woman," he added.
The prime minister underlined that the effort must not be abandoned midstream, so that all the sacrifices made were lost, and that one last great effort must be made to "lock in place" the European Union's crucial July 21 decisions for a second bailout package for Greece and a lightening of the debt burden on the Greek people.
"Finally, we are heading toward a primary surplus based on our own decisions. In other words, we will no longer generate deficits," he stressed, adding that this would give the country prospects of growth and recovery.
"The most deciding battle is now. We will win and the entire Greek people as a whole will make it," Papandreou said.
Meeting to prepare for visit to Germany
The prime minister earlier had a meeting with Development Minister Mihalis Chrysohoidis, Environment Minister George Papaconstantinou, government spokesman Ilias Mosialos, Alternate Finance Minister Philippos Sahinidis, Deputy Administrative Reform Minister Pantelis Tzortzakis and the board chairman of the Fund for the Exploitation of State Property Constantinos Mitropoulos in order to prepare for his trip to Germany next Tuesday, when he will also speak at a conference of German industrialists.