"It has been the pivotal teaching of the great Fountainhead, personal mentor and Celestia's most esteemed archivist, that the grand unified theory of magic, if discovered, is to be found within the mage's affectivity –that is; of the polarizing impetus of love, for unicorn magic, and hate, for Black Magic. It is claimed, further, that reality itself, too, is subject to this principle; and to deny so was self-contradictory. The dogma, however was not uncontested. Unicorns, Mages and Archmages from all over Equestria of all emotional preconditions would challenge and confute the thesis with ease. It was here that the great Fountainhead replied that the grand unified principle was too profound to be felt and too minute to be perceivable. He posits that, though invisible, this maxim holds together the fabric of the universe: matter with magic; existence with consciousness; dreams with reality; and–most significant of all–ourselves with one another."

-Starswirl the Bearded, "Hermeneutical Phenomenology of Pre-Classical Metaphysics", Royal Canterlot Archives (323 L.B.), p. iii-iv

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EDIT 04/16/13: Remastered version coming soon! Grammatically sound, split into several chapters and improvised.

Twilight Sparkle has learned an advanced spell that took weeks to master and finally puts it to the test. It works like a DNA paternity test and tries it on her friends to demonstrate. But then she tries it on her family, she discovers something unpleasant. Will this be kept a secret or will it tear Equestria apart into chaos? Better yet will it ruin her sanity?

*Knotwist as editor/proof-reader*

Distance can drive us apart. It can also bring us closer together.

After all is said and done, and the ponies have gone their separate ways, the only way they have to keep in touch is through letters.

Original Equestria Daily post is here
Russian translation
Chinese translation
Polish translation
Spanish translation

Now with music and audiobook

Twilight Sparkle wakes up in the middle of the Everfree Forest beside a campfire. Without any idea why she is there or where her friends are, she sets off to find her way back to Ponyville. But what she stumbles across along the way may end up turning her towards a different location...

Twilight gets a new hobby, trolling. Who better to do it to than Spike? So with the help of her friends, family and even her mentor she will spend her free time pranking, conning and tricking her personal assistant. Expect everypony to be really out of character!

Special thanks to prereader: That_One_Brony

This story is a sequel to Petriculture

It's been several months since Pinkie Pie made a stunning admission about her past that permanently changed her relationship with her friends, particularly Twilight Sparkle, but life seems to have settled back to normal (well, normal by Pinkie Pie's standards, at least). However, when an old nemesis returns and ensnares Twilight in her influence, it's up to Pinkie to make things right.

This is the second story in The Petriculture Cycle. There is a TV Tropes Page for the entire Cycle here.

Cover image by Page Turner; "Princess Twilight" vector by Nianara.

Memories of a time long gone by hold the key to Luna's salvation. To save her sister, Celestia sends Twilight on a quest through Luna's mind, searching for the source of an ancient spell that is slowly killing her. What she finds may change her forever.

Twilight experiences Luna's life first hand on an emotional journey through the dark alicorn's past.

Goddammit Pinkie Pie:
Twilight shows off her vocabulary

A Typical Day in Pwnyville
An everyday experience in the life of a rainbow-maned pegasus.

"My name is Lyra Heartstrings, and you will not remember me. You won't even remember this conversation. Just like with everypony else I've ever met, everything I do or say will be forgotten. Every letter I've written will appear blank; every piece of evidence I've left behind will end up missing. I'm stuck here in Ponyville because of the same curse that has made me so forgettable. Still, that doesn't stop me from doing the one thing that I love: making music. If my melodies find their way into your heart, then there is still hope for me. If I can't prove that I exist, I can at least prove that my love for each and every one of you exists. Please, listen to my story, my symphony, for it is me."

Cover pic by Spotlight: askspotlight.tumblr.com

Applejack had long since taken the Hearth’s Warming Eve story for fact. When she and Fluttershy find themselves in an untamed wilderness, they’ll learn that not all history is preserved. In their struggle to find their way home, the two will unearth secrets unknown to any living being, pony or otherwise.

Half a world away, the others have problems of their own. As Rainbow Dash struggles to discover exactly what she is to her oldest friend, Twilight must face the stunning truth about her long-time mentor.

In the end, what is lost, and what is found?