Writing a letter to his son, he begins to explain his reasoning for writing somewhat formally, stating what he believed to be his life's purpose . His light-hearted nature would shine through when he lightly poked fun at previous statements he had written. He shows a lot of pride for all the achievements he has made in his life. He refers to his past errors as “errata,” a term used to correct printing errors. This suggests that he simply viewed his mistakes in life as easily superseded by the greater things he had done. He emphasized the importance of hard work and that it would definitely lead to greatness and wealth. In the second part, the seemingly older Franklin shifts his tone away from his and his son's entertainments. He goes on to explain a series of patterns and virtues that would lead to a happy and fulfilling life. Finally, in Part 3, the slightly older Franklin encourages people to stop thinking out of self-interest and come together to encourage social relationships..