For Saiva Siddhantins...

For Saiva Siddhantins, Siva is the totality of all, understood in three perfections: Parameshvara (the Personal Creator Lord), Parashakti (the substratum of form) and Parasiva (Absolute Reality which transcends all). Souls and world are identical in essence with Siva, yet also differ in that they are evolving. A pluralistic stream arose in the middle ages from the teachings of Aghorasiva and Meykandar.

For Aghorasiva's school (ca 1150) Siva is not the material cause of the universe, and the soul attains perfect "sameness" with Siva upon liberation. Meykandar's (ca 1250)…