The Jedi Order mostly consists of polymaths: teachers, philosophers, scientists, engineers, physicians, diplomats and warriors, who value knowledge and wisdom above nationality. By serving others, the Jedi give of themselves through acts of charity, citizenship, and volunteerism. A Jedi's ideology and strict way of life as a worthwhile challenge to live up to is a recurring theme in the Star Wars universe. Their traditional weapon is the lightsaber, a device which generates a blade-like plasma controlled by a crystal. The fictional organization has inspired a real-world new religious movement, Jediism.