[Recep Tayyip] Erdogan is an adherent of realpolitik. He knows that international relations are not built on the strength of unilateral demands, but on solutions that are in everybody's best interest.

Would I sacrifice a friendship to take a step forward in my political career? Thus far in my political career, I have been spared from having to make such a decision, thank God. And I can't imagine what it must be like.

Ms. Merkel is avoiding retirement issues. She simply doesn't want to do anything, although she knows that doing nothing means that real pensions will fall. That is preprogrammed old-age poverty. When it comes to wage fairness: It was Ms. Merkel herself who blocked the establishment of a right to return to a fulltime job after going part time for a period. Yet everyone keeps saying that our platform is identical to that of the conservatives. It's crazy.

You can't always be demanding solidarity from others and then refuse to show it yourself.

Particularly in periods of crisis, governments have the obligation to lead by good example! Instead, many in Europe are confronting this global challenge with a penny-pinching mentality that drives me crazy.

At the time, Jean-Claude [Juncker] was already an important man in Brussels. I was a young representative in the European Parliament. We talked for a long time and from that point on, our connection became increasingly deep. But our working-class origins are at least as important to our bond.

In all of my encounters with voters, I have repeatedly been confronted with two points of critique. First: You politicians are all the same! Second: You politicians may be speaking German, but we still don't understand you!