Okay, I don't have one, so I rated best five ones.
Here we go!

5. "We don't ignore bigotry, Jack. That's how coward bigots turn into the brave bigots."
-Fenestra; Hollowpox, chapter Sunset Gala-

4. "Unexpected things happen in life. Things, you can't possibly expect, because they're very... Unexpected."
-Jupiter; Nevermoor, chapter Death comes to dinner-

3. "Shadows are shadows, Miss Crow. They want to be dark.-
-"Mr Jones"; Nevermoor, chapter Shadows-

2. "Burn brightly, Morrigan Crow."
-Kindling; Hollowpox, chapter Kindling in the Hearth-

1. "Go away if you're I'll!"
-Guess who; Nevermoor-, chapter Shadows.

Wich one do you guys like the most? Comment below!