This quote represents the father-son theme in Hamlet. A son's loyalty to his father is responsible for essentially everything in this play. Laertes, Fortinbras, and Hamlet all are driven by their loyalty to their father
I love to wear my daddy's shoes though my feet are small, when they are in my daddy's shoes, I feel 10 feet tall. Someday I'll grow to fill them, I only hope to be, as fine a man and great a dad as my daddy is to me.