Mauss saw sacrifice as a system of exchange as well. In 1899, Mauss published "Sacrifice: Its Nature and Functions" with Henri Hubert. This book compares many religious practices with a focus on sacrifice and the body. Mauss and Hubert compared religions from many places and time periods. They describe sacrifice as a system which involves both actions that are aimed towards a holy person or object and actions that are aimed away from a holy person or object. Mauss and Hubert claimed that the body is the result of many different habits and qualities. They claimed that a person is made up of certain actions that are performed through specific behaviors. 