Key quotes from high-profile European and other figures on Britain's EU referendum between 9 and 15 June, as compiled by BBC Monitoring.
European Council President Donald Tusk
"It is not only the economic implications that will be negative for Britain, it is above all the geopolitical implications. Do you know why these are so dangerous? Because long term, they are completely unpredictable. As a historian, I am afraid this could be the start of the destruction of not only the EU but also of the entire Western political civilisation.
Cancelling all treaty obligations and connections would be very sad, but relatively easy. It would take about two years. But it would be much harder to negotiate the new relationship. Each of the 27 remaining EU member states plus the European Parliament must approve the overall result. That will take at least five years to complete, and without any guarantee of success." (Interview with Bild, 12 June)
Finance Minister Wolfgang Schaeuble
"In response to Brexit, we can't simply call for more integration. That would be crude, and many would rightly wonder whether we politicians still haven't got the message... We have to take a serious look at reducing bureaucracy in Europe. And in some areas we also need to find a way to give member states more autonomy, as the British are demanding...
Europe will work without Britain, if it must. At some point, the British will realise they have made the wrong decision. We will accept them back one day, if that's what they want. (Interview with Der Spiegel magazine, 10 June)
Berenberg Bank chief economist Holger Schmieding
"Brexit poses the greatest risk for the European economy and European political cohesion this year... The British would be the biggest losers, and presumably there would be a further collapse in business investment. That would also have repercussions for Germany...
We will know on the evening of 23 June whether David Cameron has miscalculated. If all goes well for him, he will be the winner. If it goes wrong, he will probably go down in history as the conservative prime minister who gambled with the future of his country for the sake of short-term party tactical considerations." (Interview with n-tv channel, 9 June)
Former Foreign Minister Hubert Vedrine
"The possibility of Britain voting to leave the European Union on 23 June obliges us to open our eyes to the ever more critical and detached attitude of the peoples of Europe towards the European project. Automatically denouncing populism in angry speeches and sermons appeases the conscience but does nothing to address its causes...
Year after year, at every election and referendum, not to mention studies and surveys, we see this stalling process... We need a historic compromise between the elites and the peoples to relaunch the European project." (Article in Le Monde, 12 June)
Former Prime Minister and European Commission ex-President Romano Prodi
"I hope that Britain will remain in the European Union. But if the opposite happens, not everything will collapse. But the referendum has already created a wound, in that it states that one can enter or exit the European Union at will." (Agenzia Servizio Informazione Religiosa, 14 June)
General Confederation of Italian Industry Chairman Vincenzo Boccia
"The Bank of England has made it clear that Brexit will be primarily a problem for Britain, with a possible GDP decline of 1-6%. It is not in the interests of Britain or Europe, which will nonetheless come out of this better than the United Kingdom." (Milano Finanza, 13 June)
Economy Minister Mihaly Varga
"It should be borne in mind that Britain is one of the EU's net contributors, and that its withdrawal could affect the subsidies policy, with regard to which Hungary, as a net subsidised country, at the moment enjoys an extremely favourable position." (Napi.hu site, 13 June )
Komercni banka economist Viktor Zeisel
"The Czech Republic would suffer both on account of a drop in demand as a trading partner with Britain itself, and also as a result of a slowdown in the entire eurozone. In the worst case scenario, we envisage a fall in our growth rate of 0.4% a year. And this would certainly persist for some time." (interview with Aktualne.cz site, 14 June)
Czech Philharmonic Orchestra director David Marecek
"In Britain we have partner agencies, and it is also an important tour destination for us. After Brexit, cooperation would of course continue, but administratively and financially it would be more of a challenge. It would be better for the Czech Philharmonic in every respect if Britain continued to be part of the EU." (Hospodarske noviny, 12 June)
Prime Minister Dacian Ciolos
"I think that in the end they will vote to remain. The British have always supported the strengthening of the single market... If we look at this on a European level, with or without Brexit, the way the EU works needs to be examined, what we need to do, and we have not been able to do because of the financial and economic crisis... We must do this now." (Interview with France's LCI TV, 9 June)
President Nicos Anastasiades
"An exit from the EU would not only affect Europe in general, but more particularly our home country, Cyprus. This would have consequences for us, if you take into account that 40% of tourist arrivals in Cyprus come from the British market. There could also be repercussions on trade between the two countries, with Cypriot exports to Britain having reached 8%, the same as imports from Britain...
For these reasons I extend a warm call to our Cypriot compatriots and, more widely, to citizens of Greek origin living in Britain who have a right to vote, to come out positively towards Britain remaining in the EU... The Commonwealth cannot be a substitute for the benefits offered by the European Union." (Cyprus Reporter, 9 June)