European Commission President Jean-Claude Juncker is expressing fear of more referendums in other countries, after British voters chose to leave the European Union this week.
"Populists usually don't miss an opportunity to make a lot of noise to promote their anti-European policy," Juncker told Germany's Bild newspaper in its Saturday editions.
But he insisted that the impact of Brexit could quickly contradict such propaganda.
"It is likely to quickly show that Britain was better off in the EU - economically, socially and in foreign policy," Juncker said.
Juncker also dismissed concerns that the EU could be ruled by a Paris-Rome-Madrid axis. He said Germany is likely to play "an even more important role" after Britain leaves.
Juncker said the EU now must seize the opportunity to "emerge wiser from this situation."