I want to stress once more that the most important thing is to write that which you’ve always liked reading. Future writers must ask themselves what sort of books you’ve always liked reaching for. You must also at the very beginning think about your target readership. I have a friend who wrote rather demanding, intellectual books. Later he was very disappointed by the rate at which his books were borrowed in libraries. Not to even mention the fact that he couldn’t sell a single copy. If you’ve always liked reading intellectual content, then that is what you must write. But you must be aware that you’ll reach a much smaller circle of readers. There are many writers who write a single book and then, due to disappointment, throw in the towel. If you don’t expect too much to begin with, your disappointment will be smaller.