What motivated you to write River of Memory?

From the River of Memory: Dharma Chronicles series.
'I've received quite a few teachings, for a westerner at least, so I wanted to make sure that people knew which masters they came from, because of course any benefit in the teachings that people get from me is really from the masters who I heard it from, they're the ones who have great realisation... Also to show to westerners that the lineages work here, the lineages are unbroken and continue. There's no need to panic, the lineages will continue, and neither is there any need to invent a Buddhism without such things.’