Robert Neelly Bellah — American Sociologist born on February 23, 1927,

Robert Neelly Bellah was an American sociologist, and the Elliott Professor of Sociology, as well as Professor Emeritus at the University of California, Berkeley. He was internationally known for his work related to the sociology of religion... (wikipedia)

However painful the process of leaving home, for parents and for children, the really frightening thing for both would be the prospect of the child never leaving home.
Leaving home in a sense involves a kind of second birth in which we give birth to ourselves.