The meaning of this is as follows:--Its three categories are the three before mentioned; its four feet are learning, ceremonial action, meditation, and morality, hence it is called the great Tantra, possessed of three categories and four feet. Now the "souls" are not independent, and the "fetters" are unintelligent, hence the Lord, as being different from these, is first declared; next follows the account of the souls as they agree with him in possessing intelligence; lastly follow the "fetters" or matter, such is the order of the arrangement.[113] Since the ceremony of initiation is the means to the highest human end, and this cannot be accomplished without knowledge which establishes the undoubted greatness of the hymns, the Lords of the hymns, &c., and is a means for the ascertainment of the real nature of the "cattle," the "fetter," and the "master," we place as first the "foot" of _knowledge_ (_jñána_) which makes known all this unto us.[114] Next follows the "foot" of _ceremonial action_ (_kriyá_) which declares the various rules of initiation with the divers component parts thereof. Without meditation the end cannot be attained, hence the "foot" of _meditation_ (_yoga_) follows next, which declares the various kinds of _yoga_ with their several parts. And as meditation is worthless without practice, _i.e._, the fulfilling what is enjoined and the abstaining from what is forbidden, lastly follows the fourth "foot" of practical duty (_charyá_), which includes all this. Now Śiva is held to be the Lord (or master). Although participation in the divine nature of Śiva belongs to liberated souls and to such beings as Vidyeśvara, &c., yet these are not independent, since they depend on the Supreme Being; and the nature of an effect is recognised to belong to the worlds, &c., which resemble him, from the very fact of the orderly arrangement of their parts. And from their thus being effects we infer that they must have been caused by an intelligent being. By the strength of this inference is the universal acknowledgment of a Supreme Being confirmed.