It is the details of a room that give it personality, or "soul". Unfortunately, some rooms lack this quality altogether, even though they have perfectly fine furnishings.
In editing the details of a room the designer becomes an artist, making decisions about color, texture, and composition. As he/she does this, the room becomes his own. God may be in the details, but you should be too, if you want to create a room with "soul". The sheer number of accents and accessories that are placed in any given room depends to a large degree on the basic style of that room. A sleek, minimal contemparary scheme will not remain so, if it becomes too loaded with objects.
A profusion of items, however even clutter may actually enhance an English country setting and make it cozier and more charming. One does need to be careful though, too many and you don't see them. In the end, there are no absolute answers when it comes to these elements of design. Beauty is indeed in the eye of the editor... would you agree?