Explanation:
an individual ethical egoist would hold that all people should do what ever benefit " my" (the individual's) self interest, a personal ethical egoist would hold that they should at in their self interest, but would make no claims about what anyone else ought to do, are universal ethical egoist would argue that everyone.
Therefore implies that something is occurring as a result of something else. As a result, therefore best implies a cause and effect structure.
His behaviour at me irriates me.
The conclusion must restate the thesis -- which was stated in the introductory paragraph. Think of the introduction and the conclusion as the two slices of bread of a sandwich.
