Here's the one Phil's comment brought to mind.
INTRODUCTION TO THE BARRACK-ROOM BALLADS IN "THE SEVEN SEAS"
When 'Omer smote 'is bloomin' lyre,Now, speaking for myself, I am admittedly a bit obsessive about this. Among many other things.
He'd 'eard men sing by land an' sea;
An' what he thought 'e might require,
'E went an' took -- the same as me!
The market-girls an' fishermen,
The shepherds an' the sailors, too,
They 'eard old songs turn up again,
But kep' it quiet -- same as you!
They knew 'e stole; 'e knew they knowed.
They didn't tell, nor make a fuss,
But winked at 'Omer down the road,
An' 'e winked back -- the same as us!
I am certain that I unconsciously "steal" in good faith. Any preacher will know what I mean. I mean that I read or hear something really good, it gets buried in my subconscious, and then resurfaces years (or, more's the pity, months) later, as my own thought. By that I mean I've completely forgotten that I heard it somewhere, and so it feels like my own thought. And so I can preach or write it as my own thought, plagiarizing in good conscience.
But where I'm obsessive is if I know I'm about to borrow, I must credit. If I'm using another man's outline, or a major thought (not necessarily a minor turn of phrase or observation), it best suits my notion of integrity to say so.
Admittedly, I'm probably the only one to care. When I say it, my longsuffering hearers are probably thinking, "Whatever! I don't even know that name! Thanks, Phillips — there's fifty-three seconds of my life I'll never have back!"