He said: “In 20 to 30 years Europe will have become an authoritarian or imperial state, after a phase resembling civil war and decay.
Mr Engels has claimed Europe would teeter towards authoritarianism since 2011 – and the ongoing migrant crisis has now added weight to his warnings.
The 37-year-old added that the parallels between the European Union and Julius Caesar’s equivalent are “so massive, so obvious and that has been the case for decades”.
He also pointed out the splits between the elite – the modern-day Roman Senators – and populist movements that demanded the people be given a voice.
Politicians such as French presidential frontrunner Marine LePen and Dutch right-winger Geert Wilders rise to prominence as a result of such populism, Mr Engels added.
He added: “The present population movements are only one of the many symptoms of our present spirit, characterised by a strange mixture of cosmopolitanism, self-doubt, calculus, materialism and bad conscience.
“I’m afraid of that but it would be cowardly to close my eyes just because you do not want to see reality.”