John Dewey, an early 20th Century American philosopher, psychologist, educational theorist saw Social Psychology as much a physical science (with rules and predictive power) as Biology and Chemistry. This project encompasses Part 1 of 4 of his book Human Nature and Conduct.Dewey's uses the word "HABIT" as a specialized catch-all word to describe how a person and his/her objective environment interact. This interaction is the basis for moral judgement. Dewey writes: "All habits are demands for certain kinds of activity; and they constitute the self.” In other places he also asserts that "Habits are Will."