Smith suggests that we, as humans, don't spend the day simply thinking about and perceiving actions, but rather, we act. That is, we are involved in the world. He states, "We are primordially and essentially agents of love, whihch takes the structure of desire or longing." (50) And, furthermore, what we love defines who we are, that which "ultimately governs our vision of the good life, what shapes and molds our being-in-the-world." (51) This last bit has the same sort of urgency that is in Virilio's work, where he wants to know "Where is being-in-the-world in the era where speed it at the limit?" (Virilio 56) Being-in-the-world is an active state, a way that one negotiates with the world around them. Things matter in ways that we cannot always articulate (what an interesting concept that Smith brings up). (51) So, this desiring--the active state of being-in-the-world--is directed at a certain target, which, in turn, defines who we are. This is fascinating stuff.
Note that the Paul Virilio quote is from The Administration of Fear, Ames Hodges, trans. (Los Angeles: Semiotext(e), 2012).