Jagadguru Shri Chandrasekharendra Saraswati Shankaracharya Mahaswamigal (born in a Kannada Smartha family as Swaminathan Shasthri; 20 May 1894 – 8 January 1994) also known as the Sage of Kanchi or Mahaperiyava (meaning, "The great elder") was the 68th Jagadguru Shankaracharya of the Moolamnaya Saravjna Kanchi Kamakoti Peetham. Mahaperiyava's discourses have been recorded in a Tamil book titled "Deivathin Kural" (Voice of God).
I am Not a one to decide work done by swamiji is good or not. I am just writing this to encourage the ones who want to start reading this. This book gives a complete and very good proved pictures of all the dharmas and tradition in our religion. The way swamiji completes each topic is fabulous with a proof in 3 to 4 different ways. Many things mentioned in the book are must understand by all the hindus and understand what is the scientific reason to follow that
We need a simple yet profound description of what the Vedas, Upanishads and prayers ordain, what are their inner secrets, His holiness Chandrasekharendra Saraswati Swami known as Periyava (Respected elder in Tamil) has described all these in simple terms, If you want to understand what bhakti is, what sanatan dharma is, Grab this book!
This book is a treasure that should be read by anyone who would want to understand the roots of Hinduism. It is the kind of book that I'd pass to my future generations. Magnum opus ,indeed !