One. When I visited Mexico a few years ago I heard the story of the ‘virgen del metro’. This is how it goes: In Mexico City thousands of people live in the streets. One day one of them saw a piece of mould in the floor of the metro station of Hidalgo and watched it for a while. Suddenly, in the midst of the mould, the face of Mother Mary appeared to him. The mould itself turned into her face. Others saw her, too, and they instantly agreed on a reading.