Here's the breakdown:
* Quotes within a sentence: If the article title is part of a sentence, only capitalize the first word of the title and any proper nouns.
* Quotes as a separate sentence: If the article title is a separate sentence, you can capitalize it as if it were a normal sentence, but this is less common.
Examples:
* In a sentence: "I read the article, 'The Rise of the Digital Age,' and found it fascinating."
* As a separate sentence: "The article's title was 'The Rise of the Digital Age.'"
Important Note: Always follow the style guide of the publication or organization you are writing for. Some may have their own specific rules for quoting article titles.