I want to emphasize that a horse is a brain on four legs. The brain determines everything a horse is doing or trying to do. The brain determines how a horse moves and how it feels about that movement.
I have never thought of good horsemanship as a discipline in itself. In my mind, it has always been a foundational element of everything we do with a horse.
I am very pleased to see that nowadays more people are teaching the importance of taking their horse’s opinion into account during the training process.