Moments of peace experienced during meditation serve as a genuine, if brief, insight into the nature of Nirvana by demonstrating a mind free of defilements.

“So there was the very direct experience of peace in that moment that maybe it's only for a few moments but it's genuine. And so that experience of peace is kind of a forerunner we might say of nibbana in the sense that in that moment there were no defilements in the mind”