The BBC News story that follows it:
There are a lot of practical problems with any ambitious policy. That does not sound like a good reason for being so dismissive.
Mr Clegg said there were real questions marks about the "workability" of a UK-only bank tax, given that most banks operated across national borders and in many countries.
"It has been debated for many years and it has a lot of practical problems," he told the BBC.
And if a UK-only tax is not workable, doesn't that make this an ideal opportunity to promote the Liberal idea of international co-operation?