Here Shankara pours out not only his heart but also all his poetic skill in painting a picture of Shiva which no one can view without a thrill. These hundred verses have been aptly called Shivananda Lahari, the waves of bliss that inundate those who contemplate on Shiva.
The whole universe is one. There is only one Self in the universe, only One Existence, and that One Existence, when it passes through the forms of time, space, causation, is called by different names, buddhi, fine matter, gross matter, all mental and physical forms. Everything in the universe is that One, appearing in various forms. When a little part of it comes, as it were, into this network of time, space and causation, it takes forms. Take off the network, and it is all one.
-Swami Vivekananda