What is the theme in The Art of Seduction by Robert Greene?

Seduction is the main theme of the book. Seduction works in some discernable ways. Part of what makes it work, involves what Robert Greene describes as types. This is the case both on the side of the seducer and also on the side of the seduced. Some types work well together and others do not. The author advises people against even trying with someone else of the same type because they will tend to want to give and receive "too much in the same ways." There is one exception to this, however, and that is with a type that the author defines as "gender floaters." In the case that both people want to play around with gender role behaviors, then the author recommends that two of that type do in fact work together.