Pandurang Shastri Athavale
Rev. Pandurang Shastri Athavale (19 October 1920 – 25 October 2003), also known as Dada /Dadaji, which literally translates as "elder brother" in Marathi, was an Indian activist, philosopher, spiritual leader, social revolutionary, and religion reformist, who founded the Swadhyaya Parivar (Swadhyaya family) in 1954. Swadhyaya is a self-study process based on the Bhagavad Gita which has spread across nearly 100,000 villages in India, Americas, Europe, Middle East, Oceania and other Asian countries with five million adherents. Noted for his discourses on the Bhagavad Gita, the Vedas and the Upanishads, Dadaji is also known for his selfless work and brilliant knowledge in scriptures.
Source: Wikipedia