In a world of instant messaging, there is a quiet magic to the wax seal. During the Middle Ages, the color of the wax and the imprint of the ring were as unique as a fingerprint. Senders would blend beeswax with Venice turpentine and natural pigments (like cinnabar for red). Breaking a seal was a tactile, sacred ritual — an agreement of trust and patience between two distant souls. Perhaps today is a good day to write a letter to someone you miss.