Do you take notes when you're reading?

When I'm reading, I don't take any notes. The only time I took notes was when I was in school and was reading text books. But for non-text book reading, I don't take any notes. However, I do think taking notes are a really good way to keep track of what you're reading especially if it's something complex, overly technical or you simply just want to remember key points, themes, characters, etc. It is a good way to remember thing, maybe I'll start taking notes.