So, you were the source of the quote until you said this, right?
That's what you're saying. That until Wright denies having said it, he is the source of the quote.
Regardless, you once told me, "I like to fling my own poo at people on the street while standing on my head and reciting 'Where The Wild Things Are' in Spanish." You are the source of
that quote until you deny it. And it is odd that you have yet to deny it. You
must have said it.
Of course, if you ever do deny it, someone (maybe me, maybe someone else) will come up with another unsupported quote that will have you as the source, until you deny it. On and on it will go until you either spend all your time denying having said all these unsupported statements or you decide it isn't worth your time addressing every stupid thing someone decides attribute to you and, instead, get on with your life.
This is why the burden of proof is on the person making the claim, not person about whom the claim is made. More to the point, this is why Klein is currently the source of the quote, not Wright. If Klein had more credibility, he might be given more benefit of the doubt. As it is, it is up to Klein to provide some sort of evidence that this conversation took place.