To Build a Fire
One lesson that can be learned from "To Build a Fire" is to always be prepared for nature. "In reality, it was not merely colder than fifty below zero; it was colder than sixty below, than seventy below." This quote explains that even when you prepare for fifty below zero, you should prepare for even more than that. The man just thought it was cold so he didn't think about if the temperature was more than said, yet alone should you go at the temperature the old-timer suggested. "[The snow] grew like an avalanche, and it descended without warning upon the man and the fire, and the fire was blotted out!" This quote means you should always think twice before making a choice. The man's choice was to build the fire under the tree, but if he had thought twice, he would of built it out in the open, where there was no risk of snow.