Self-realization: who am I …

One day, a man returning from his farm saw the egg of an eagle. He took it and put it in the nest of a barnyard hen. The eaglet hatched with the chicks and grew up with them. It fluttered and squeaked like a chick, and picked the ground for worms with the chicks.
One day, the eaglet saw a bird high up in the sky and asked the accompanying chick, “What is it far high up in the sky?” The chick answered, “That’s the eagle, king of the birds. Eagles belong to the sky, we belong to the ground.”
The young eagle grew up, lived and died a chicken, because that’s what it believed that it was.