What does London mean when he writes about the “paradox of living”? What are his examples of this? Can someone plz help the book is "The Call Of The Wild"

anne's craft goods

123 e mason drive, johnson, ms

12345

to whom may it may concern;

i have recently ordered a product from your online shop. the shipping details read that my order would be delivered by the 8th of december, whereas it was delivered the 13th. i needed the package for a christmas exchange. 

since i paid for overnight shipping, but did not receive the package in the time allotted, i am kindly asking for a refund. the product was just perfect, but i do not believe i should have to pay for a quick shipping if it came late.

you for your time, i hope to hear from you soon.

sincerely,

john smith

first person

explanation: