 Scipione apparently found that his worldly accomplishments were not spiritually rewarding.He became increasingly religious as the years went by, adopting an austere lifestyle.This process culminated on 25 January 1557, when Scipione was accepted by his spiritual advisor, Giovanni Marinonio, as a lay brother; contrary to the Theatine custom (which required months of probation), Burali was vested with the habit on February 2, 1557, only a week after his admission, adopting the name "Paolo Burali d’Arezzo".