Chapter 7: An interesting take on the act of "lying" and its implications. Frankfurt almost starts to sound like a Continental Philosopher here. The way, he argues, in which "lying" can impact the ontological worldview of the receiver of a lie is nothing short of profound.
Chapter 8: Didn't know Frankfurt was such a cutie, beginning the chapter with a Shakespearean reference and in the end making room for "layers of lying/deception" in cases of sincere romantic love.
Those were two of my favorite chapters from the book. A worthwhile read.