I'm trying my hand at editing a friends work, and I've got a little stumped.
They wrote the following:
'Thinks he's the smartest one in the room,' Henry wrote on a piece of paper.
(For context, when they write dialogue they use double quotation marks.)
So, on a piece of paper, Henry has written the words: "Thinks he's the smartest one in the room."
My initial thought was that the single quotation marks are incorrect. (Though I might be wrong about this.) I can only think of two alternative ways to go, and I don't know which of these three options would be correct:
Single quotation marks (as my friend has):
'Thinks he's the smartest one in the room,' Henry wrote on a piece of paper.
Double quotation marks:
"Thinks he's the smartest one in the room," Henry wrote on a piece of paper.
Italics:
Thinks he's the smartest one in the room, Henry wrote on a piece of paper.
Generally, I'd think to use double quotation marks for quoting words. However, I feel that that would make it look and read too much like dialogue--especially because there's a conversation happening around the line.
A reason I'm leaning towards the italics is because, even though "Thinks he's the smartest one in the room" is a quote, it's also a thought that Henry's having. If it was "Henry thought" instead of "Henry wrote" then I'd know to use italics.
So, am I to use single quotes, double quotes, or italics in this situation? Or something else? Or is it just a matter of style?