To each his own understanding

A sickly-looking man enters a bookstore and asks: “Is it here that you sell those stamps that are so good against tuberculosis?”
My colleague Riikkamari Muhonen explains that for much of the twentieth century special charity stamps known as “tuberculosis stamps” were sold around Christmas, and the money raised was used to research cures for tuberculosis and to build special homes for consumptive families.
(Tuulispää, Helsinski, 1911)