This collection investigates the core question of how a soul can achieve total abandonment to the divine will amidst the mundane and often difficult circumstances of daily life. Jean-Pierre de Caussade, an 18th-century Jesuit priest, provides a framework for spiritual growth that emphasizes the present moment as the primary vehicle for grace. Michel Olphe-Galliard, S.J., curates and presents these letters, which serve as practical guidance for those seeking to deepen their interior life through surrender and trust in providence.

This work is regarded as a foundational text in the tradition of Catholic mysticism, valued for its direct and accessible approach to complex spiritual concepts. The collection is frequently cited by scholars and practitioners alike for its enduring relevance to the challenges of maintaining spiritual focus in a distracted world.