[There's a jolt at the suggestion - it is one he's thought through in the past...]

I'd -- have - to come back... [He couldn't very well leave or arrange to leave alone, after all, and any reason he left would inevitably vanish clean out of memory along with the cause.] -- I - don't really want - this... -- coming back -- all at once... -- to - be honest... [He sounds as unsettled as he is by the thought - voice restricts and recoils thin.

There are other reasons he's appalled by the idea of needing to leave. He assumes however that they'd sound rather insane and feeble, under the circumstances.]