The title does a neat trick. The Horse (usually capitalized because, if you are unaware of how all this works, the Horse in question is a talking, Narnian horse) comes first and he is the dominant figure. The boy (not capitalized) is his, not the other way around. But really, the book is about the boy, not the Horse and especially not about the girl.
This was my favorite Narnia book as a child, barely, but definitely, beating out The Lion, The Witch, and the Wardrobe. And I thought my daughter my like it. It’s a simpler story than that first Narnia book (and it was the first he wrote and, frankly, everything will make much more sense if you read them in the order he wrote them than if you attempt to retroactively place them in a chronology based on the timeline of Narnia, itself) and less allegorical. The stakes feel lower because, even though the hero, Shasta (the boy), saves the nice kingdom of Archenland, Archenland is only Narnia’s neighbor and not the home of Talking Horses and the like.
But, if you read it now, you will find a muted, but still nasty form of orientalist racism running through. Thankfully, the girl, Aravis, is from the more or less Middle Eastern style kingdom of this world (though, really, it’s less Middle Eastern than inspired by, I would guess, childhood readings of The Arabian Nights). She does get some decent characterization and growth and is a strong person with brown skin and black hair (like my daughter, to whom I was reading this). But this doesn’t make up for the moment when the titular boy is singled out for being blonde and fair skinned and obviously of northern stock and though never said, one can’t help but feel that we are supposed to feel that this makes him somehow better than all those vaguely Arabic chaps. Reading those bits to my daughter almost made me put down the book.
I also had not remembered that C.S. Lewis made the correlation between Aslan and Jesus clearer than at any other point before the final book in the series. He even puts in a parallel to the incarnation.
What, in the end, as a grown up living in the days after the death of George Floyd (which came after the death of countless others), did I take from it? Anything at all? It is an old fashioned adventure story, more similar to the serials of the 20s and 30s than anything else in Lewis’ oeuvre and I like those stories, for all their many faults.