Former US President Bill Clinton has got an honourary doctorate from DCU.
The university presented him with the doctorate "in recognition of his leadership in building and consolidating peace and reconciliation on the island of Ireland."
Speaking at The Helix, Mr Clinton said the world has to embrace global communities.
"Some thought needs to be given before we abandon community to return to tribe - you can keep your tribe.
"Everybody that knows me at home knows I'm - on my mother's side - Irish, everybody that knows me knows I grew up in the south.
"They also know that I think life is a lot more interesting in a diverse America than it was when everybody who had any swot was somebody who looked like me: an old grey-haired white guy.
"You don't have to give up your tribal identity to respect the larger humanity, without which the world will not continue to thrive".
He also praised Ireland, pointing out that we're the only country in the world since the founding of the United Nations to have had a citizen in another country every single day trying to help people in need.