A staunch European integrationist, Macron pledged after taking office on Sunday to restore France's standing on the world stage, strengthen national self-confidence and heal divisions that the bitterly fought presidential campaign had opened up.
The French president pointed out that "without Europe, there will be no peace, prosperity and freedom".
Germany is looking to Mr Macron to revitalise France as an economic power and political heavyweight in the European Union, which is facing complex divorce proceedings with its current number two economy, Britain.
"From the German point of view, it's possible to change the treaty if it makes sense", Merkel added reported the BBC.
"I am not a promoter of the mutualisation of old debt" within the eurozone, said Macron after meeting Chancellor Angela Merkel, adding however that the joint financing of future projects should be considered.
He also said France will push for economic reforms in the country to bring down unemployment and implement a reform agenda "not because Europe requests it, but because France needs it".
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The two leaders thanked senior lawyer Harish Salve, who headed a battery of lawyers presenting Indias case at The Hague. In securing a unanimous verdict, India has succeeded in exposing Islamabad's consistent undermining of worldwide norms.
Bild daily wrote that voters had rewarded local politicians who had shown they backed Merkel, and provided "something to think about" for those in the CDU who had called for her head.
Germany was also ready to partner with France in seeking more cooperation in defence policy and a more coherent European foreign policy that could "make Europe more visible" and stronger, she said.
"It will be a long, bumpy path", said Schulz to his dejected supporters on Monday.
"We each represent the interests of our own countries, but the interests of Germany are naturally closely tied to the interests of France", Merkel said, as cited by AP.
Mr Macron sought to bat away German fears on debt, saying he was opposed to mutualising "old debt" between eurozone countries.
The pope's telegram urged Macron to "always take care to build a more just and more fraternal society, with respect to differences and attention to people who are in situations of precariousness or exclusion".
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In many ways its the revival manifesto with tax cuts, spending increases, legalisation of cannabis and few other voter-friendly polices.
He sought on Monday to show solidarity with Germany on the migrant crisis - an issue on which Merkel has pressed for European Union countries to work together - by saying that a common asylum policy was one area where Paris could cooperate with Berlin.
It's a delicate balancing act, as Macron tries to redesign French politics by borrowing ministers from left and right and new faces.
Back in Paris, there was some unhappiness among Socialists, many who had flocked to Macron's side to thwart Marine le Pen, with his choice of the right-wing Philippe.
The French President also called for a "less bureaucratic" European Union that "better protects" its citizens, and he categorically ruled out the so-called "eurobonds " n a proposal launched during the Eurozone crisis that would consist of combining debts among countries sharing the common currency, something to which Berlin is vehemently opposed.
Merkel, 62, has been chancellor since late 2005, when Jacques Chirac was French president.
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