QUOTE : The essential nature of samvit is the subtle stir of spanda. The introverted and extroverted movements of spanda cause samvit to manifest itself in both the noumenal and phenomenal aspects of creation. These two aspects of samvit are known in Shaivism as Shiva (transcendent) and Shakti (universal). Shiva and Shakti are the two names given to the monistic Absolute (Paramasiva) when it is being considered in its dual aspects of eternal and transcendent changelessness (Shiva), and the ever-changing and immanent manifestation of universal appearances (Shakti).<br /><br />— B. N. Pandit, Specific Principles of Kashmir Shaivism (3rd ed., 2008), p. 17