by Six Paths of Rinnegan:
The Deva Path (天道, Tendō), which allows one to manipulate both attractive and repulsive forces.
The Asura Path (修羅道, Shuradō), which grants the user mechanised limbs, weaponry and armour.
The Human Path (人間道, Ningendō), which gives the ability to remove a soul and so, read a person's mind.
The Animal Path (畜生道, Chikushōdō), which lets the user summon a wide variety of creatures.
The Preta Path (餓鬼道, Gakidō), which can absorb all forms of chakra, including most ninjutsu.
The Naraka Path (地獄道, Jigokudō), through which one can summon and control the King of Hell.
The Outer Path (外道, Gedō), which rules over both life and death.
http://naruto.wikia.com/wiki/Six_Paths_Technique
http://naruto.wikia.com/wiki/Rinnegan
Buddism Six Paths:
Each rebirth takes place within one of five realms according to Theravadins, or six according to other schools.[57][58]
Naraka beings: those who live in one of many Narakas (Hells);
Preta: sometimes sharing some space with humans, but invisible to most people; an important variety is the hungry ghost;[59]
Animals: sharing space with humans, but considered another type of life;
Human beings: one of the realms of rebirth in which attaining Nirvana is possible;
Asuras: variously translated as lowly deities, demons, titans, antigods; not recognized by Theravāda (Mahavihara) tradition as a separate realm;[note 18]
Devas including Brahmas: variously translated as gods, deities, spirits, angels, or left untranslated.
http://en.wikipedia.org/wiki/Buddhism#Rebirth
TL;DR
Rinnegan = Power of Buddism
The Deva Path (天道, Tendō), which allows one to manipulate both attractive and repulsive forces.
The Asura Path (修羅道, Shuradō), which grants the user mechanised limbs, weaponry and armour.
The Human Path (人間道, Ningendō), which gives the ability to remove a soul and so, read a person's mind.
The Animal Path (畜生道, Chikushōdō), which lets the user summon a wide variety of creatures.
The Preta Path (餓鬼道, Gakidō), which can absorb all forms of chakra, including most ninjutsu.
The Naraka Path (地獄道, Jigokudō), through which one can summon and control the King of Hell.
The Outer Path (外道, Gedō), which rules over both life and death.
http://naruto.wikia.com/wiki/Six_Paths_Technique
http://naruto.wikia.com/wiki/Rinnegan
Buddism Six Paths:
Each rebirth takes place within one of five realms according to Theravadins, or six according to other schools.[57][58]
Naraka beings: those who live in one of many Narakas (Hells);
Preta: sometimes sharing some space with humans, but invisible to most people; an important variety is the hungry ghost;[59]
Animals: sharing space with humans, but considered another type of life;
Human beings: one of the realms of rebirth in which attaining Nirvana is possible;
Asuras: variously translated as lowly deities, demons, titans, antigods; not recognized by Theravāda (Mahavihara) tradition as a separate realm;[note 18]
Devas including Brahmas: variously translated as gods, deities, spirits, angels, or left untranslated.
http://en.wikipedia.org/wiki/Buddhism#Rebirth
TL;DR
Rinnegan = Power of Buddism
