Once again, this perspective emphasizes the fact that humans and their work exist in a reciprocal, dialectical relationship with each side influencing and shap¬ing the other. Humans create work in order to attain their needs and wants; but work also shapes humans. In the words of commentator Gregory Baum, "It is through labor that people create their world, and it is through the same labor that in a certain sense they also create themselves." Humans "must transform a por¬tion of nature through labor to have food and shelter. In order to improve the con¬ditions of survival, people must invent a division of labor, a social organization, and a system of authority. Labor creates society." But in doing so, humans are cre¬ating the social and cultural world that socializes them, creates their conscious¬ness, attitudes, beliefs, values, and interests. In this sense, through labor humans are creating themselves by determining what kind of person they become.