* It's a proper noun: "Romeo and Juliet" is the title of a specific work, similar to how we write "The Great Gatsby" or "Hamlet." Proper nouns are capitalized and don't need quotation marks.
* Distinguishing from other uses: Quotation marks are used to distinguish specific words or phrases within a text, or to indicate direct speech. In this case, you're referring to the entire play itself.
Examples:
* Correct: "Romeo and Juliet" is a tragic love story.
* Incorrect: "“Romeo and Juliet” is a tragic love story."
Exceptions:
* You might use quotation marks if you're discussing a specific scene, line, or phrase from the play.
* If you're writing about a character's dialogue, you would use quotation marks to indicate their spoken words.
In short, when referring to the play as a whole, just use the title capitalized and without quotation marks.