Trying to fill in someone else's shoes is futile. The person will at best be a shadow of the one who shoes they are trying to fill. It is best to have new shoes (their own) rather than live in the shadow of another
20 Examples of Inspiring Conceptual Photography I's images like this that promote the negative side to everything in life. You can't do anything these days without constantly being reminded about weight gain etc.
I really like this poster. The shadow of the hand and cigarette appears to be a hand holding a gun. It would look even better with smoke coming out of the cigarette, making it look like the gun was just fired.
I think this quote relates to the novel because it shows how death and growing up before you die is a central idea in the book. It shows the idea that life is unfair to people, like with all the discrimination, but people can also die and be mature.