Feast of Fra Angelico.
There's perhaps some ambiguity to this image. The incident from the biography is that he's turning away from a lump of valuable rock and indicating the church. But a naive observer might also think that the austere monastic was fleeing the Masses of gold in the churches behind. A constant tension. When passing a church, remember that there's a rather important book inside. When passing a library, remember that there's quite likely a few books in it that would be more appropriately read in a sacred place. I remember happening upon the sacred Tibetan shelves in the library in Indiana one afternoon. Vigilate.