Prime Minister Viktor Orbán said the "future belongs to central Europe" as the region was protected from migration.
Speaking at the 34th Balvanyos Summer Free University and Student Camp in Baile Tusnad (Tusnadfurdo), in Romania, on Saturday, PM Orbán said western European countries were now "mixed societies with a growing Muslim population" and with a "Muslim majority in big cities within the foreseeable future".
"A population exchange will take place," he said.
Europe would remain a migration destination in the years to come, he said, adding that ten years from now the prime minister's chief task would be to "protect the country's western borders from migration".
He said in western Europe, Christianity and a nationally minded life had never been linked, and he contrasted this with Hungary, where the constitution "recognises the role of Christianity in preserving the nation".
PM Orbán said young people were now taught that "if they are Hungarians, they have a task ... to preserve what we have, to acquire what we need ... and to say 'no' to what we do not need."