Most creative people have a great deal of physical energy, but are often quiet and at rest. They can work long hours at great concentration.
Most creative people tend to be smart and naive at the same time. “It involves fluency, or the ability to generate a great quantity of ideas; flexibility, or the ability to switch from one perspective to another; and originality in picking unusual associations of ideas.
Via stan stewart, Nicko Gibson, Henrik Safegaard - Cloneartist