Sree Narayana Guru lived in a modern age. Realizing the need of the times, he uniquely re-presented the esoteric secrets of the Upanishads by harmonizing them with modern scientific thought. While mantras such as "Brahma Satyam Jagat Mithya" (Brahman is real, the world is illusory) was widely chanted, Guru was the first to explore their profound social relevance. Although his philosophy is predominantly identified with Advaita Vedanta, his works also reflect insights from Shaiva Darshanam, Shaktheya Darshanam, and Yoga Darshanam.
Guru referred to the singular ultimate truth by the names ‘Atman’, ‘Brahman’, and ‘Arivu’. While Atman traditionally serves as a synonym for "life" in the Puranas and the Hindu epics, the Upanishads define it as ‘Satchidananda’—a composite of ‘Sat’ (truth unbound by time, space, or object), ‘Chit’ (pure knowledge, understood by each individual as consciousness), and ‘Ananda’ (bliss).
Narayana Guru perceived the Atman as that which discerns itself even within darkness. Guru emphasized that Vedanta philosophy, through the power of reason, can guide even staunch atheists towards truth. Throughout history, thinkers have proclaimed that the path to the Supreme Truth lies in introspectively seeking the essence that shines within oneself. To uncover the truth underlying the entire universe, one must first uncover the truth residing within each individual. Narayana Guru elucidated this as closing the eyes to the external world and turning one's attention inwards, affirming the critical role of introspective self-inquiry. His investigative method involved an inward quest for the truth of the Self, leading to the ultimate rejection of dualities such as internal-external or mind-matter.
In his concise yet unique work, ‘Arivu’ (Knowledge), Narayana Guru demonstrates how Advaita Darshanam can be understood as a science of knowledge, a contribution that enriches not only the philosophical world but Vedanta itself. Here, knowledge is shown to extend from the perception of external objects to the very essence of understanding.
