The Preacher

Being bitter is drinking poison and hoping someone else will die - author unknown, seen on the posts of Slashdot user LarsWestergren.

There is a song by The Brothers Frantzich called Abraham that purports to answer this very question. I first heard it a few weeks ago on the Prairie Home Companion, and I remember thinking initially that it was a very cool song. Then I paid closer attention to the lyrics:

I am not what I do,
I [...]