Have you ever heard of musical frission? Sometimes you hear a piece of music resolve, and it feels right, and that rightness makes you feel pleasure, sometimes described as a chill running down your spine. You can get the same emotion from learning a new idea that overturns a lot of what you knew and inspires a manic rush of ideas. Or if you've been in a room full of people listening to a speaker seriously talk about a deeply personal experience, the room gets totally quiet and you realize that everyone in the room is feeling the same things as you at the same time. These are the kinds of experiences people describe as feeling the spirit. It's an intense feeling that something is true, and good, and important.