The First Quarto of The Letter Mage is written for a young adult audience, yet it doesn't talk down to them like much of media made for young people. There are complex concepts presented here in language that is somewhat simplified at times, but never in ways that trivialize the ideas or the reader. It's clear that Alex not only cares about her audience, she respects them as well.
Young adult books that take this approach can be a gateway into a much wider world of thought and understanding. It works on multiple levels, in that if you wanted to look for progressive ideology you'll find it on every page, but it's almost seamlessly worked into the plot, character development, and world-building. An example: the subtlety with which the gay relationships are presented. The Letter Mage normalizes them in a way that might not work if they were the focus or the main driver of the story. It seems to be an effective approach, one that's almost more convincing and true-to-life. This book and its ilk casually demonstrate that gay people are just like anyone who isn't, and can't be held to any one stereotype. You encounter them in stories like this in all kinds of roles with all kinds of talents, just like you do in real life and maybe not even know it.
But to discuss The First Quarto merely in terms of its ideology would really sell it short. The beauty of much of the imagery in this can make you need to stop and read it over again, and the cumulative effect throughout the book is almost disorienting. As the shape of the storyline ahead becomes clear in the later part of this quarto, it becomes clear that this effect may only intensify. It sets the imagination alight and will inspire young writers, if only they can get their hands on it. The style isn't always even and some of the action somewhat awkwardly tries to capture the feel of a cartoon or anime, but as the book progresses, it settles into a groove that frees itself of some of the early cliches and develops its own voice.
Just wait until you get to the Prismatic Moon. Or see Pala's sculptures, or how Aleph's journal works. You'll want more, and from what I can gather there's quite a bit coming. Due out in serial format, the sum total of The Letter Mage seems like it could be something amazing once it's finished. Another world in itself, the product of a rare creative energy that seems practically boundless.