Return to Revisions

#Japt, 10 bytes

"iQ ²"iQ ²

Here's how this works:

"iQ ²"      // Take this string.        iQ ²
      iQ    // Insert a quote.          "iQ ²
         ²  // Double.                  "iQ ²"iQ ²
            // Implicitly output.

Test it online!

Of course, any single digit is also a quine because of implicit output.