Lately I got a book which is a collection of Kafka's hand-drawings. Of course his literary skills and his drawings are of essentially different nature since they're different art styles, but I think it did expanded my horizon about Kafka's creative imagination. Knowing more about writers may lead us to a certain interpretation exclusively and it may pose a risk in terms of relating to the essential richness of the work, but as long as we discuss the pros and cons of knowing more about the writer and be aware of what's going on, I think it definitely expands vision and imagination.