This book is a commentary on the book “The Problem of Rebirth”, written in a lucid way. The Karma theory of Sri Aurobindo is extricated from that book and put in a logical way, so that the general reader will understand the details of Karma, its relation with rebirth and soul-evolution. Individual and collectivity, laws of Karma, higher law of Karma are explained with examples. Traditional Karma theory is compared with Sri Aurobindo’s Karma theory.