Dear, parental figures. . .
The phrase that indicated a lost in thought feel is the "Midnight shakes the memory". It means that his train of thought is going double time in the dark or at night.
A literary medium is a way to communicate information or artistic outlet. One many examples of a literary medium could be an autobiography. It could also be a crossword puzzle that one has created. A medium is any language, so how an author chooses to write it makes it a literary medium.
