For some reason, I always assumed that the alphabet more or less arrived as a set, stepping onto the stage of history as a group of 26. I never really gave the matter much thought, of course, or I would have realized that it could not possibly have happened that way, but it wasn't until I read this book that I learned how they came about. Some evolved out of ancient Egyptian hieroglyphs, some came from Phoenician, and others from early Semitic. This little book, after an introduction to the general lay of the historical (and prehistorical) land, takes us through the development of each one.
Five of our letters (F, U, V, W, and Y) all came from the same ancient semitic letter "waw", which meant "peg". Hence, "F is for peg". "A", on the other hand, came from an ancient Egyptian hieroglyph which resembled the head of an ox. Hence, "A is for ox", which gives the book its name. Each letter's mini-chapter takes us through its development into Greek, Etruscan, Roman, medieval Carolingian, 15th century humanist, and eventually modern forms. I was also surprised to learn that several of our letters were not quite into their modern shape when the 1700's began, although the "f"-like form of the letter "s" reminded me that I already knew about at least one case like that.
I mostly read this book at night, one letter per night. There is something relaxing about reading a brief (two pages) summary of how several thousand years of history had their affect on one little corner of the human mind. It gives you the very opposite perspective of a what-went-horribly-wrong-with-the-world-in-the-last-15-minutes viewpoint from the least healthy corners of the internet.
It is in the nature of the alphabet, that we don't think about it very much. The beautiful calligraphy of the uncial (medieval manuscripts from 4th-8th centuries) is not as convenient to read, perhaps for precisely the same reasons that make them so pleasant to look at. The proper task for a letter is to allow you to look past it, not really noticing it as itself but just the words that it makes up. But, there is a quiet satisfaction to be gained from looking closely at something which you normally take for granted, especially something as extraordinarily useful as the alphabet. It didn't just happen; somebody had to have the idea, but like riverbed stones smoothed to roundness by the passage of time and tumbling, the letters have been slowly and intermittently evolved until (for example) an ox head becomes "A", and then eventually "a". Like picking up that rounded riverbed stone in your hand and enjoying for a few moments the feel of it, it was a source of relaxation, almost meditative, to think (for a few minutes) about only one letter, where it came from, and how it got that way.