Author: Nisargadatta Maharaj
Nisargadatta Maharaj (17 April 1897 – 8 September 1981), born Maruti Shivrampant Kambli, was an Indian spiritual teacher and philosopher of Advaita (Nondualism), and a Guru, belonging to the Inchgiri branch of the Navnath Sampradaya. In 1973, the publication of his most famous and widely translated book, I Am That, an English translation of his talks in Marathi by Maurice Frydman, brought him worldwide recognition and followers, especially North America and Europe.
source: wikipedia
source: wikipedia