Nisargadatta Maharaj, the author of "I Am That," had a unique perspective on the nature of reality. He believed that reality is ultimately beyond words and concepts, and can only be experienced through direct realization.

According to Maharaj, our perception of reality is limited by our thoughts, beliefs, and conditioning. We create a false sense of self, which he refers to as the "I am" or the ego. This ego is a product of our mind, and it creates a sense of separation from the true nature of reality.

Maharaj believed that the true nature of reality is pure consciousness, which he called the "I am that." This consciousness is the source of all existence and is present in everything and everyone. It is the ultimate reality that underlies all forms and experiences.

However, our identification with the ego prevents us from experiencing this pure consciousness. We become attached to our thoughts, emotions, and desires, and we believe that they define who we are. This attachment leads to suffering and prevents us from realizing our true nature.

Maharaj emphasized the importance of self-inquiry as a means to transcend the limitations of the ego and experience the true nature of reality. He encouraged people to ask themselves, "Who am I?" and to observe their thoughts and emotions without identifying with them. Through this process, one can realize that the ego is just a temporary construct and that the true self is pure consciousness.

Maharaj also believed that everything in the manifested world is impermanent and subject to change. He saw the world as a play of consciousness, constantly changing and evolving. He encouraged people to detach themselves from the world of appearances and to focus on the unchanging reality within.

In Maharaj's view, the ultimate purpose of life is to realize the true nature of reality and to live in alignment with it. This can only be achieved through self-inquiry and letting go of the ego's limitations.

In conclusion, Nisargadatta Maharaj's perspective on the nature of reality is centered around the concept of pure consciousness, which he called the "I am that." He believed that the ego creates a false sense of self and prevents us from experiencing this pure consciousness. Through self-inquiry and detachment from the ego, one can transcend the limitations of the mind and realize the true nature of reality.