I have an essay and it is about writing literature through a lens of quotation. – graduate researcher

I have an essay and it is about writing literature through a lens of quotation. I have already started it, but barley. I was just looking for someone to help lead me into the right direction with this essay.
I have to Write an essay that analyzes one work of literature that you have read from the perspective of a quotation. In your essay, interpret the quotation and explain whether it applies to a work of literature you have read. Support your opinion using literary terms and elements as well as details from the text.
Lens Quotation: “Character is what you are in the dark.” -Dwight Lyman Moody
for the assignment I have to choose a book that we have read in class and I am choosing “Lather and Nothing else” to agree with the quotation that was given for the assignment.