It is a combination of two concepts: The Philosopher's stone, and a philologist aka philologer.
A philologer (more commonly: philologist) is one who studies languages, typically but not always ancient, with both an analytical and cultural lense. Some commonly known philolgers are the Brothers Grimm, Friedrich Nietzsche, and J.R.R. Tolkien. Now, these figures are usually more well known for other works, but each of them studied languages and offered textual and even cultural analysis of works. J.R.R. Tolkien taugh courses on the history of the English language, and worked on many texts (including translations) therein. Before becoming a philosopher, Friedrich Nietzsche was a professor of classical philology, having learned Latin, Greek, and Hebrew. His first major published work, Geburt der Tragödie (The birth of tragedy) is both philosophical and philological in nature. Finally, the Brother's Grimm, best known for their collection of fairtytales, also made massive contributions into how we understand the evolution of the Germanic languages, coining "Grimm's Law." Like these figures, I am greatly interested in the classics, works of philosophy, and the evolution of languages (particularly the Germanic branch) and so the content in this website is will reflect that.
This is a concept from alchemy, and not just a story in Harry Potter. Alchemists were essentially chemists before the Enlightenment. That is to say, the were not always up to our modern scientific standards, but they were essentially doing chemistry for thousands of years. Many alchemists throughout history believed in a substance that could turn lead into gold, and in some cases could even be used for immortality. They basically believed in a miracle substance, much like the Holy Grail, that they searched for and theorized about. Needless to say, no Philosopher's Stone has been found, but the basic idea is compelling.
The Philologer's Stone is a concept of my own creation. It would not be a physical item per se, but rather one which exists as the result of technology. Something in the realm of data.
The Philologer's Stone which I have in mind is something which is a dynamic display of how languages relate to each other.
For the uninitiated, many of the world's languages belong into language "families", of which the most popular and largest is undoubtebly the "Indo-European" family, containing within itself smaller families, and such languages as English, Russian, and Hindi, to name a few.
There has been much work in studying these languages and establishing their grammars and their relationships to each other.
Now all that remains is for these relationships to be adequately compiled all into one resource.
For this I have in mind some sort of visual interface. One that represents data in a virtual 3D plane, where one can navigate (perhaps through the aid of AR or VR) and visually ascertain the web of connections between languages and words. For example, if one wanted to see how the English word "brother" relates to other languages, they would be able to see it's evolution through history, and the way it traces back to Old English, then to Proto-Germanic, and then finally to Proto-Indo-European. From there at would then trace back out, where it connects to Greek, Latin, and so on. At the same time, connections to "siblings" and "cousins" can be represented, so Scots "brither" would be connected by a line as a sibling while German "Bruder" would be connected as a cousin. This example is both diachonic and synchronic (having to do with evolution and how things are, respectively) and ideally it could be filtered by language family for ease of use. It has the advantage of showing everything at once, and with utmost clarity.
Now this would only be one such dimension of a true Philolger's stone. Other important dimensions would be semantic, phonological (both gaphically and auditorally), and semantical, to name the most important ones. It would be nice, as well, to be able to see where words appear in cannonical corpi and as what as what graphical form. In any case, the Philosopher's Stone, while certainly conceivable with today's technicnology, is a long way off. However I have made it my mission to cast a vision for this linguistic endpoint - for the technology that unites linguistic fields under a single cause - and to make whatever small steps I can in the process.
In the meantime, I intend to create and publish resources for language learners, focusing primarily on Germanic languages, and (for copyright's sake), those which fall in public domain. So if you have interest in Old Norse, German philosophy, Old English, or anything else of the sort, watch this space!