Are unreadable books still books? I focus on this unreadable status between books and book readers which is not an abstract logic but a narrative tension. People think through language, which means that the boundary of language is the boundary of thinking. It can be said that human thought is controlled by language. Interestingly, I got rid of heaviness of knowledge when I was facing the “unreadable” Finnish books. The Chinese Zen masters focuses on communications of minds, loose written words, which frees itself from the literal barrier. Finnish books.