The aim of this book is to examine the contribution of M.N. Roy, a 20th-century Indian Philosopher, in the field of philosophy. Much work has already been done on Roy as a socio-political thinker and little as a philosopher. His philosophical explorations, are therefore tried to study both in the context of Indian and Western philosophical traditions.This book will be very relevant to the readers who have philosophic interest in general and the philosophy of M.N. Roy in particular.