When looking at a material thing, for example, a house, it is perceived from the point of observation of the viewer. The house appears as near or remote; these attributes are understood with reference to the place from which the experiencing subject observes. The house appears as being straight ahead or located on the side. The observer may perceive it before him or from some height. Its mode of presentation depends upon the standpoint of the observer. The house may be seen in bright sunshine, at dusk, through fog, etc.