The startling assertion that "the laity must be apostolic" requires unpacking as the Church becomes more and more confined in modern society. But, as Fr. Francis Wendell shows in this short book, there is a transformative "philosophy of presence that can be exercised only by lay people since they are present in and are of the world." In this short work, Fr. Wendell shows how: - the laity must avoid a purely external living of Christianity- how there is no one-size-fits-all program for the laity- that the gifts and talents of each person provide an opportunity for unique holiness- how formation for a profession must not overshadow the formation of laity in their common role as members of the Mystical Body of Chris.While some of his particular advice is better suited to the time period in which he lived, he highlights the timeless truth that the most important part of the lay apostolate is holiness. We participate in God's life through grace, and must share this life with others. Whether you are a layman wishing to better understand your role as an apostle, or a priest looking to help your flock evangelize the world, this book is insightful food for thought.