I like the whole "bodhisattva vow" deal, where they're like "yeah, I hit enlightenment a couple lifetimes ago, but I took a vow to keep coming back anyhow, just to help y'alls reach that same state. Yeah. That's the only reason I'm still here."
I'm like, that's very considerate, buddy!
This being only my first time 'round, I'm never sure if these "old souls" are putting me on or what.