During our religious instruction in school, we always asked: How can one prove the existence of God? And I have learned that the Catholic Church, which is never at a loss for an answer when it comes to existential questions, responds as follows: This question simply does not arise.

There is a proposal to divide the currency zone into a north and a south euro. There is also the idea of setting up a core monetary union in the middle of Europe. I disapprove of these debates. Instead, we should devote all of our efforts to supplementing the monetary union with a political union.

I have known a great many politicians who have not managed to stay in power for 16 years. I have nevertheless already managed to remain at the helm for 18 years. I still want to achieve a great many things for my country. Experience is not a disadvantage here, especially as the head of government of a small country in a European setting that has become more difficult.

I completely agree with Helmut Kohl. I am not an advocate of the "United States of Europe," nor am I an integration fanatic.

I am, however, deeply saddened by this [Brexit] vote by the British electorate. But I respect their decision. What is crucial now is that we focus very precisely on what Europe can do for people: stimulate investment, create jobs and together ensure the safety and security of our citizens.

Germany will continue to play a central - perhaps even a more important - role in the European Union. I think that we will all miss the pragmatic approach of the British, however, particularly in those long nights of negotiation.

How will the exit affect thousands of British pensioners living in Portugal or Spain who will lose their access to the welfare and health systems? Fifty-three free-trade agreements, which were negotiated by the EU on behalf of all Member States, are also hanging in the balance for the UK.