
A larger and more detailed reproduction can be found at:
http://www.rijksmuseum.nl/images/aria/sk/z/sk-c-535.z
You can almost hear the silence, only broken by the soft scratching noises of the cat, especially when you see it in reality (it's fairly large: 134 cm x 113 cm). Despite the religious note, I find the quiet dignity of this painting much more inspiring than all those bright "heroic" and "exalted" paintings, the admiration of which seems to be de rigueur in Objectivist circles.
Here is another painting by Maes, Old Woman Dozing:

and "Girl at a Window":