The allegorical sense of her [Mary Magdalene’s; Luke 7:37-39] great action dawned on me the other day. The precious alabaster box which one must break over the Holy Feet is one’s heart. Easier said than done. And the contents become perfume only when it is broken. While they are safe inside they are more like sewage. All very alarming.
—C. S. Lewis, Letters To An American Lady, 29