Shaivism of Kashmir has developed between the eight and the twelfth centuries of the Christian era. This comparatively younger philosophy has tried to explain all such ambiguities which the ancient philosophers have failed to resolve. Like Advaitavedanta it is monistic, like Vaishnavism it is theistic, like yoga it is practical, like Nayaya it is logical as also appeasing like Buddhism. Kashmir Shaivism is, therefore, idealistic and realistic in essence, strongly advocating a pragmatic approach to life.

Tantras have been revealed by Lord Shiva through his five mouths namely Ishana, Tatpurusha, Sadyojata, Vamadeva, and Aghora. These very five mouths represent his five energies namely Chitshakti (consciousness), Ananda shakti (Bliss), Ichhashakti (will) Jnanashakti (knowledge) and Kriyashakti (Action) respectively. When these aforesaid five energies of Lord Shiva unite with each other in such a way that each of these takes bold of the rest simultaneously, they reveal sixty four Bhairvatantras which are purely monistic. This very approach explained in these Tantras is called Kashmir Shaivism or Trika philosophy.

Veda, Shaiva, Vama, Dakshina, Kaula, Matta, and Trika are the seven Acharas (systems) recognised by Kashmir Shaivism. The most popular among the seven Acharas has been the Trika system. What does this Trika mean ? Trika means trinity of Nara Shakti and Shiva as is given in Tantras. Nara means an individual, Shakti means the Universal Energy and Shiva means the Transcendental Being. Thus a soul recognizes himself as Shiva by means of the realization of his Shakties - the powers of God-head. Therefore this Trika system advocates the practical path towards complete self-realization. To make it more clear, this three fold science of spirit is based on the three energies of Lord Shiva namely Para, Parapara and Apara. Para energy is subjective energy of Lord Shiva and it is regarded as the supreme. Parapara energy is cognitive energy of Lord Shiva and is called as intermediate. Apara energy is objective energy of Lord Shiva and it is known as inferior energy. Thus the Trika philosophy of Kashmir Shaivim advocates how a human being, engrossed in the inferior objective energy of Lord Shiva, can be taken upwards viz. towards the supreme energy of Lord Shiva through his cognitive energy. For this journey, undertaken to attain the real Transcendental state of self, Trika philosophy has laid down three means within the ambit of cognitive energy. The first and the supreme expedient is called Shambbavopaya. The intermediate expedient is known as Shaktopaya and the third expedient is called Anvopaya.