As the hunger for the realization of the Ultimate Truth grows deeper and deeper in the true devotee of Her Majesty Divine Truth, he/she discovers scriptures of Divine Origin. Shiva Sutras were revealed to sage Vasugupta in a dream by a Siddha (perfected being) who told Vasugupta : "On the Mahadeva mountain, the secret doctrines are inscribed on a piece of stone. Collecting the doctrines from there, teach them to those who deserves grace". Shiva Sutras , therefore attributed to Shiva Himself. It is impossible to underestimate the importance of this book. This book is of greatest importance for those who seriously interested in the Ultimate Reality. It is not only perfectly describes Reality, but more that that, it offers three Upayas (spiritual practices, yoga) for different levels of aspirants for the Realization of Siva Consciousness - Sambhava Upaya, Saktopaya and Anavopaya. From my own experience, if one is deeply longing for the realization of the Ultimate Truth, one is inevitably should discover the well of wisdom of Kashmir Shaivism tradition, going ever deeper into the Krama, Kula and Trika systems of Yoga and Phlosophy. If you have never read it, you missed one of the most important spiritual work of all times. Swami Lakshmanjoo translation and commentary translation is great You can also check translations and commentaries on Shiva Sutras by Jaydeva Singh