The term "ethical pot" was coined by Oliver Watson in his book Studio Pottery: Twentieth Century British Ceramics in the Victoria and Albert Museum to describe a 20th-century trend in studio pottery that favoured plain, utilitarian ceramics. Watson said that the ethical pot,"lovingly made in the correct way and with the correct attitude, would contain a spiritual and moral dimension." Its leading proponents were Bernard Leach and a more controversial group of post-war British studio potters. They were theoretically opposed to the expressive pots or fine art pots of potters such as William Staite Murray, Lucie Rie and Hans Coper.