Sentence:  Probably the most important thing to focus on is not the development of conscience , which may well be almost beyond the <WSD>reach</WSD> of literature , but the contents of conscience , the code which is imparted to the developed or immature conscience available . 
Meaning of the word marked with <WSD> tags:  an area in which something acts or operates or has power or control: "the range of a supersonic jet"