Knowledge of Sanskrit also may be useful in understanding the agamic lexicon, as most of them are derived from them. The saiva-sastra texts  discuss about  a wide range of issues like ontology, cosmology, phenomenology, epistemology, logic, psycho-analysis, psychotherapy, physiology, medicine and ethics.

However the sastra texts are not studied in depth and the interpretation varies from author to author on many issues. Besides the contemporary trends like hermeneutical and psycho-analytical interpretation are not done yet in the sastra texts.