The purpose of including 79-80 is to express how he feels and his thoughts on death and life like when he says ""-and no doubt it's written that death will surely come ,  and so we should't worry so much. After all , we too are made of stardust and there is no difference between the stuff of the stars and us " this quote alone hints of how at times he is stuck between thoughts of order and chaos and him thinking that death is sure to come only gives him hope to be here and enjoy right now for he cant change the outcome. Earlier on page 78 you can see how he talks about the incident with the man and how he sued the banquet hall for glass shattering and hurting his leg instead of accepting his fate and moving on he decided to interact and thus effect him in ways that will possibly never be know by him. In the grand scheme of things he points out the humanity in all of us and how we are quick to get affected and react than to look at life and enjoy it.