It's just the same as being sick.

I seen a lot o' doctorin' in my day, and I'm forced to believe there ain't any sick folks 'cept them that thinks they air sick.
"The older I git, the more I'm bound to consider that most things is inside, anyhow, and what's outside don't count for much.
"So it stands to reason when ye play the game for what's inside, ye win over all the outside players.

When ye done kindness to Hoag, ye mightn't a meant it, but ye was bracin' up the goodness in yerself, or bankin' it up somewher' on the trail ahead, where it was needed.

And he was simply chawin' his own leg off, when he done ye dirt.

I ain't much o' a prattlin' Christian, but I reckon as a cold-blooded, business proposition it pays to lend the neighbour a hand; not that I go much on gratitude.