Pope Francis on Friday issued another indictment of inequality, saying that “equitable economic and social progress” are only possible through solidarity and generosity, and require the “legitimate redistribution” of wealth.

The Pontiff delivered the comments while speaking to United Nations Secretary-General Ban Ki-moon and other UN senior executives at a meeting in Rome.

People should share the “material goods [as well as] intellectual and spiritual ones” they have received, and should “give back generously and lavishly,” he said, according to a statement released by the Vatican.

He said that “equitable economic and social progress can only be attained by joining scientific and technical abilities with an unfailing commitment to solidarity accompanied by a generous and disinterested spirit of gratuitousness at every level.”

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