St. Casimir was so chaste that he communicated the desire to be pure to others. This is a beautiful thing, for we often meet people who are pure, but to whom Providence has not given the gift of making their purity communicative. Their purity is known, and they are admired and praised for it, but their virtue is not communicative.
Now, one of the best forms of apostolate is to have a communicative type of virtue, which passes from one person to another as if by osmosis. And communicative chastity is an extremely precious gift in the practice of the apostolate.
However, due to God’s displeasure with the world, gifts like this become very rare. This is why we need to turn to a St. Casimir from the 15th century to understand what inviting and radiant purity is, which attracts people to the virtue that is the opposite of impurity, of that sensuality that is also persuasive in dragging others into evil.
Virtue that draws others towards the good is something seldom seen in our days, and yet it gives much glory to Our Lady!