According to Aristotle, "all things aim" at some good and humans are no exception. We, however, recognize an ultimate or "chief good" which we pursue for its own sake, and for whose sake, we seek and do everything else. Aristotle calls this good eudaimonia or happiness and defines it as an "activity of the soul in accordance with excellence" or arete. That philosophers agree on, but there is no consensus as to what Aristotle's idea of eudaimonia refers to. The two competing interpretations are, that he identifies happiness with "good life" or "faring well", or that happiness for him is the sole activity of contemplation. The controversy is inspired among other things, by Aristotle's treatments of eudaimonia in Book I and Book X of Nicomachean Ethics (NE). The proponents of happiness as living well argue that since humans engage in various activities and pursuits throughout their lives, and Aristotle devotes the better part of NE to discussions about the ethical and intellectual virtues, what lives are good, kinds of actions, etc., happiness must be an inclusive goal referring to nested or related in some way pursuits and engagements. They object to the notion of eudaimonia as the single activity of contemplation arguing that the idea allows no role for the ethical virtues rendering them irrelevant and identifying Aristotle's ethics as amoral at best and possibly immoral. These philosophers argue further that contemplation as outlined by Aristotle is a useless activity and given Aristotle's view that nature does nothing in vain, such an activity questions even the need for contemplation. Regrettably, the proponents of happiness as an activity of contemplation, only defend the idea by attempting to accommodate the various pursuits humans engage in throughout their lives within a notion of eudaimonia as a single overarching goal and in the end, alter the definition of happiness Aristotle intends or forthright reject it even if unwittingly.