Most crises or dangerous situations have a long incubation, only the conscious mind is not aware of it. Jung provides an example of a dream of this type. Dreams also play an important role in the creative process. Many great creations and discoveries have been inspired by dreams. A dream informed the Russian chemist, Mitri Mendeleev, of the correct order of the elements based on atomic weight. August Keckule was shown the structure of the benzene ring in a dream. The basic theme of Robert Louis Stevenson's novel, Dr. Jekyll and Mr Hyde, came to him in a dreaming.