Synopsis The aim of this book is basically to introduce the reader to the fundamental principles that Trika philosophers have enunciated in their philosophical-cum-theological treatises. Such an approach has been adopted deliberately on account of the fact that Trika System of Thought, which is very rich in philosophical vocabulary, is hardly known to general public in the manner of Advaita Vedanta of Samkara. Although non-dualistic in orientation, yet it differs radically from the monism of Samkara with regard to the nature of the Absolute and the world. The Trika Philosophy rejects the Vedantic view of the absolute as being inactive. Instead of an inactive Absolute, it thinks of the Absolute theistically, and so speaks of Paramasiva as being both consciousness and reflective awareness. As such the Absolute of Trika is equated with the absolute freedom, and so the school also is referred to as being that of Freedom. In so far as the status of the world is concerned, the Trika thinks of it as being extension/emission/reflection of Paramasiva and so is considered to be real. It means that the world, even though a reflection of Paramasiva, is actually Siva itself. From these main differences it can be discerned that the Trika absolutism is radically different from the one that Samkara has adumbrated. The reader upon reading the book will be able to have the grasp of the main philosophical principles that the Trika has enunciated and developed.