Anarchy is the state of a society being freely constituted without authorities or a governing body. It may also refer to a society or group of people that entirely rejects a set hierarchy. Anarchy was first used in 1539, meaning "an absence of government". Pierre-Joseph Proudhon adopted anarchy and anarchist in his 1840 treatise What Is Property? to refer to anarchism, a new political philosophy and social movement which advocates stateless societies based on free and voluntary associations. Anarchists seek a system based on the abolishment of all unjustified, coercitive hierarchy and the creation of system of direct democracy and worker cooperatives.