I'm pretty sure it was Einstein.

Darn, I thought it was Feynman and checked it beforehand. Maybe it was Von Neumann quoting Einstein (himself quoting...)

I think xg15 was just making a joke about the tendency for every quotation that could possibly be assigned to Einstein to be assigned to Einstein.

(Perhaps you too are making a joke and it's gone over my head, in which case my apologies.)

Nah, was just making a general joke about fake quotes, as did the GP I think.

It has a von Neumann sound to it.