I was an education major in my undergrad, and in my educational theory class I was taught three basic theories about human beings.
The first theory is drawn from the Puritans way back in the 1600s who thought that people are basically bad. This was supposedly called the “Old Deluder Satan” theory. Apparently it was taken from a 1642 law that referred to Satan this way. What I wasn’t told, however, was that the purpose of this law was to legislate public education (every town with 50 families had to hire a teacher, and every town with 100 families had to establish a grammar school).