“The personal entity, which identifies its existence with life in the physical body and calls itself “I,” is the ego.
The physical body, which is inherently inert, has no ego sense. The Self, which is pure consciousness, has no ego sense.Between these two, there mysteriously arises the ego sense, which is the “I” thought.
This ego, or separate personal identity, is at the root of all suffering in life. Therefore, it is to be destroyed by any means possible. This is Liberation or Enlightenment or Self-realization.
– Ramana Maharshi