This isn't an actual quote from Derpy herself, but from a really big fan that made an amazing song about her.
I'm going to post a link to the song, I recommend you listen to it, download it, and leave a good comment.
The story this guy has is something every Brony/Pegasister should hear. It's very touching.
Here's the Link: [link]
Note: It's a story, then the Song. The Download link in the Description is just the song, so no worries.
Listening to this song, and this guy's story has really made me more of a Derpy fan, not knowing that that was actually possible xD
Enjoy the Wallpaper! Feedback is appreciated!
EDIT: Found a flaw - "you'll becoming a shining star." has been changed to "you'll become a shining star."
-Thanks to lhs1041 for the find!