Libor Teplù Construction constituents of a church interior create a photographic picture, which, however, does not reflect the interior as it is, but just the constituents, which are transferred into an artistic reflection about general questions on the theme ÓLight and DarknessÒ. This theme brings about the relationships between the material and the spiritual, in the sense of their mutual and inseparable unity. The objective sources thus, in fact, lose their meaning. The applied ÒtechnologyÒ is purely photographic, the only stylization is the transfer into black and white scale. These photographs are 70 x 100 cm, and then adjusted for the original locality of the church, so that the church building constituents could be identified back to their sources. The people, (regular or random) visitors to the church, could thus compare the objective reality with its transformation into an artistic form, which would be justified by the reflection on the theme ÒLight and Darkness.Ò An optimum church for this project should be open all day, and it should be visited both by tourists and by regular church-goers. (The photographs included are taken in the Church of the Assumption of Mary in Opava, which meets this requirement.)