Speaking to reporters after the meeting, Tusk described the talks as long and "surprisingly informal," saying they went beyond strict protocol and included reflections on the legacy of Polish-born Pope John Paul II.
"I told the Holy Father that his words can greatly improve the world, which is heading in a troubling direction, and that his words and actions can help restore moral order in public life," Tusk said.
He added that they shared similar views on issues such as human rights, solidarity and dialogue. Tusk said the pope also had a message for Poles to remain hopeful and united.
"The Holy Father conveyed an important thought … not to lower our heads, not to lose hope, but to build strength for good and unite around what is right,” Tusk said, adding that "the world does not have to descend into chaos if people of goodwill act together."
Leo may visit Poland in 2028, Tusk says
Tusk confirmed that he invited the pope to visit Poland and said the invitation had been warmly received, though no date has been set.
He said the visit would most likely take place in 2028, citing the pope's schedule and Poland's parliamentary elections next year.
The prime minister said the talks also covered international issues, including Russia's war in Ukraine, global security and Europe's defence efforts.
Tusk said he presented Leo with a copy of the Pentateuch in Kashubian, referring to the first five books of the Bible translated into a regional language spoken in northern Poland, where he has family roots.
After meeting the pope, Tusk held talks with Vatican Secretary of State Cardinal Pietro Parolin and Archbishop Paul Richard Gallagher, the Vatican's foreign minister.
The Vatican said the discussions focused on relations between the Polish state and the Catholic Church, "especially in the field of education and with regard to ethical issues," as well as Poland's "social and economic situation."
The two sides also exchanged views on international developments, with particular attention to the war in Ukraine and Poland's role within the European Union, the Vatican said in a statement.
Tusk's meeting with Pope Leo was his first since the pontiff's election last year.
Later on Thursday, the Polish prime minister was expected to hold talks with his Italian counterpart Giorgia Meloni in Rome.
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Source: IAR, PAP, vaticannews.va