The Introduction to the Devout Life...was written precisely for the laity and perhaps St. Francis de Sales is the first spiritual writer to compose a treatise of lay spirituality. As he states in his preface, those who have written previously on the spiritual life have done so for the instruction of persons who have given up association with the world or they have taught a spirituality that would lead persons to do so. The intention of St. Francis, however, is to give spiritual instruction to those who remain in the world, in their professions and in their families, and falsely believe that it is impossible for them to strive for the devout life.