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This little book is worth its weight in gold. As a Marian of the Immaculate Conception (which is not related to the Schoenstatt movement, but we can certainly appreciate it), I am just blown away by the profound insights of Fr. Joseph Kentenich.
The book consists in conferences from 1924 and two sermons from 1965. They work together quite well. The key to this book is the definition Fr. Kentenich gives of the “Marian person:”
The Marian person is the person who understands as deeply as possible, in the spirit and light of faith, Mary’s role in the work of redemption, and allows her to permanently impact his practical life even to the last consequence, so as to become a holy apostle (pg. 21).
Anyone devoted to the Blessed Virgin should read this little book.