Well actually, Dick, the 'provenance' of the person making the quote is worth knowing - whether I agree or disagree with it - and, it's normal good practice to give a citation if you're quoting someone else: who, where, when - all of which gives it background. Did it come from a formal music publication, a scholarly paper, a drunken whisper over a bottle of Guinness in O'Hare's Bar, etc...

And why should you then be criticised, if it's not your own statement?