The Mimamsa school of Hinduism explained artha, dharma and kama by contrasting Puruṣārtha and Kratvartha. Puruṣārtha is human purpose of a yajna, while Kratvartha is sacrificial purpose of a yajna. They recognized and explained all human actions have two effects: first, every act affects itself regardless of actors involved; second, every act has human meanings, hopes and desires and affects each actor in a personal way. Jaimini explained in 3rd century BC, that this human meaning cannot be separated from the human goal. The "phala" (fruit, result) of a sacrifice is implicit in the "artha" (meaning, purpose) of the sacrifice. Mimamsa school then argued that man is for the purpose of actions demanded by Vedic injunctions (apauruseya), and such subordination of man to rituals allows man to reach heaven. Other schools of Hinduism, such as Yoga and Vedanta schools, disagreed with Mimamsa school. They argued that rituals and sacrifice are means, not ends. Their emphasis shifted from rituals to effort and knowledge, from heaven to moksha, from freedom afterlife to freedom in this life, from human being as a cog in cosmic wheel to human being as an end in himself. For example, Aitareya Aranyaka recites: