Open Europe  has just published a useful guide to what pro Euro advocates have said over the years. (www.openeurope.org.uk) It includes such gems as

Angela Merkel  - 1st  March 2010 “We have a Treaty under which there is no possibility of paying to bail out states in difficulty.”

Greek Finance Minister – 1999 ”We must enter the euro with a clean sheet on all the criteria.”

Mr Barroso – 5 Feb 2010 ”The euro is a protection shield against the crisis.”

Will Hutton -  2003 ”Although there are worries about one exchange rate and one interest rate for a whole continent, the advantages more than outweigh the disadvantages.” etc etc