"By nature and doctrines I am addicted to the habit of discovering choice places wherein to feed"

In this quote, O. Henry is revealing his passion for finding the very best locations to eat. He is highlighting his natural inclination and beliefs towards seeking out and finding the very best alternatives for nourishment. The words "addicted" and "routine" suggest that this is more than simply a passing interest, but rather an ingrained part of his character. Furthermore, using the word "choice" suggests that he has high requirements and seeks out just the very best choices. In general, this quote exposes O. Henry's devotion to the pursuit of great food and highlights his gratitude for the finer things in life.