In G.I. Gurdjieff's Fourth Way teaching, also known as The Work, centers or brains refer to separate apparatuses within a being that dictate its specific functions. According to this teaching, there are three main centers: intellectual, emotional, and moving. These centers in the human body are analogous to a three-storey factory, the intellectual center being the top storey, the emotional center being the middle one, and the moving center being the bottom storey. The moving center, or the bottom storey is further divided into three separate functions: sex, instinctive, and motor.