CCC 928
Profession of Faith›SECTION TWO I. THE CREEDS›CHAPTER THREE I BELIEVE IN THE HOLY SPIRIT›Paragraph 4. CHRIST'S FAITHFUL - HIERARCHY, LAITY, CONSECRATED LIFE
"A secular institute is an institute of consecrated life in which the Christian faithful living in the world strive for the perfection of charity and work for the sanctification of the world especially from within."