You have to let the people vote when it comes to a new constitution.

I take note of the fact that there are a lot of people who appreciate what I do as parliament president, not just within my Social Democratic party group, but also among the conservatives.

It is courageous to occasionally admit that there are certain things one can't do.

Primary responsibility for Brexit lies with British conservatives, who took an entire continent hostage.

I try to speak in a manner that allows people to tell me apart from my political adversaries. And I speak in a manner that the people can understand. For me, that isn't populism.

We need a big debate in society about how we are going to shape Europe and tame capitalism. A government must provide direction and make concrete proposals. It is one of Angela Merkel's biggest failings that she doesn't do this.

I would never attack somebody only because they belong to a different party.