"When chaste people need body or mind to resort to action or thought, they find steel in their muscles or knowledge in their intelligence. Theirs the diabolic vigor or the black magic of will power."

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Even if you are on the brink of damnation, even if you have one foot in hell, even if you have sold your soul to the devil as sorcerers do who practice black magic, and even if you are a heretic as obstinate as a devil, sooner or later you will be converted and will amend your life and will save your soul, if-and mark well what I say-if you say the Holy Rosary devoutly every day until death for the purpose of knowing the truth and obtaining contrition and pardon for your sins.

— Louis de Montfort