 Further examples are easily found. Mrs. A has social aspirations, and wants to move with the elite. Mr. A is easy-going, and loyal to his old friends. They accordingly disagree about what guests they will invite to their party. The curator of the museum wants to buy pictures by contemporary artists; some of his advisors prefer the purchase of old masters. They disagree. John’s mother is concerned about the dangers of playing football, and doesn’t want him to play. John, even though he agrees (in belief) about the dangers, wants to play anyhow. Again, they disagree. (1944, 3)