When you're quoting a source, use quotation marks to indicate a character's thoughts, and make it clear in your prose that you are quoting thoughts, not speech: ... If you're writing fiction, you may style a character's thoughts in italics or quotation marks.

Do thoughts go in quotes or italics?

Final Thoughts

Use quotation marks for both speech and thought. Quotation marks will identify these words as actually spoken or literally imagined as thought. Reserve quotation marks for speech alone.

Should internal thoughts be in quotes?

Keep in mind that the only real rule when it comes to internal dialogue in fiction writing is that, while you may use dialogue tags, you typically should not use quotation marks. Quotation marks should be reserved for writing spoken dialogue. Some writers use italics to indicate internal voice.