Adelard of Bath would be in demand in the present day. This 12th-century English scholar, arrayed in his striped hat, brilliant green or red cape and lapis lazuli shirt, ‘had a talent', Violet Moller explains, ‘for communicating complex scientific ideas and adapting them for an amateur, but interested, audience'. Yet he also devoted a good part of his time to profound research, translating mathematical, astronomical and astrological texts from Arabic – astrology being regarded in his time, especially at the Norman court in Sicily, as a very exact science with medical as well as political uses.