On Piety

This is not a book for the casually curious. Jean Guibert, a Catholic theologian and spiritual director, wrote for those willing to take piety seriously as both discipline and gift. Originally published in the early twentieth century with ecclesiastical approval, On Piety offers a rigorous examination of what it means to live as a person of faith, and why such a life yields unexpected fruits. In Part I, Guibert maps the nature of piety itself: what it is, how it differs from mere habit or obligation, and why it draws the soul into intimate contact with God. In Part II, he catalogues its fruits: a purified heart, an enlightened mind, a strengthened will, and a zeal that makes love for God and neighbor inseparable. Written for skeptics and seekers alike, this book speaks to anyone who has ever wondered whether ancient spiritual wisdom still holds relevance for modern life. Guibert is unsentimental and precise, treating piety not as sentiment but as something demanding and transformative. Those drawn to classical spiritual formation, to the great Catholic tradition of theological psychology, will find here a guide worth returning to.