Complex sentence: Aizenstat with the help of Aizenstat's friend Jame Hillman (a prolific writer in his own right) asked the elder Joseph Campbell if he would grant his significant library to Pacifica.
Split into simpler sentences: Aizenstat with the help of Aizenstat's friend Jame Hillman (a prolific writer in his own right). Asked the elder Joseph Campbell if he would grant his significant library to Pacifica.