"The Book on the Taboo of Knowing Who You Are" discusses the cause of the illusion that the self is a separate ego, which confronts an everyday universe full of physical objects that are foreign to it. It is a person's identity (their ego) that connects them to the physical universe and allows for the creation of a relationship with their surroundings and other people. The ideas in this book explain the mystery of existence, which is seen as an alternative to alienation, which is a common feeling in the West, and show how we can understand the universal self that is inside every living thing.