Referendums are a democratic instrument, but so are decisions reached in a parliamentary democracy. I advise extreme caution when it comes to referendums. In Germany too.

My worry is that Donald Trump may inspire copycats, also in Europe. That's why I hope Hillary Clinton wins.

We must now, in the 21st century, protect democracy, one which rests on fundamental rights for all, regardless of skin color, gender, race or religion. Nothing less than that is at stake.

The racist rhetoric that extends all the way to the top of the AfD shows that one must assume that an attitude is prevalent - not just in the grassroots, but also among party leadership - that is not consistent with the basic values reflected in our constitution.

We won't get any growth in Greece by just imposing cuts. What I would prefer is a special economic zone for Greece.

Before we talk about further accessions, we have to consolidate the European Union internally. People are increasingly losing faith in the EU's effectiveness.

Refugees cost us money too when they come to us. If we improve their living conditions in Turkey, we create an incentive for them to stay there and not to place their fates in the hands of smugglers.