In this paragraph, Muir most likely wants to emphasize how you can never know what is going to happen in a trip. The author tells us that at times, he had to sleep without blankets and sometimes he struggled to find food. However, he also tells us that most of the time, he could find food in the houses of the farmers. Although the statement appears contradictory, Muir most likely wants to tell his readers how you can never know what to expect in a journey.