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), Anandashakti (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.