Are speech marks used for thought?

Yes, speech marks (also called quotation marks) are often used to represent a character's thoughts in writing. This is called internal monologue.

Here are some examples:

* "I can't believe he said that," she thought, her face flushing.

* "If only I had studied harder," he thought, regretting his lack of preparation.

* "This is the best day of my life," she thought, her heart soaring.

Important notes:

* Different styles: Some authors use italics instead of speech marks for internal monologue.

* Context is key: It's important to make it clear through context that the words between the speech marks represent thoughts, not spoken words.

Let me know if you have any other questions!