Final answer:
Aristotle believes that humans have a specific function, which he identifies as rational thought. Cultivating the virtues through the exercise of reason helps humans achieve eudaimonia, which can be understood as flourishing or living a fulfilling life.
Step-by-step explanation:
Aristotle believes that humans have a specific function, which he identifies as rational thought. According to Aristotle, humans are distinct from other living beings because of their rational capacity, and the development and perfection of reason is the basis for human virtue or excellence. Aristotle argues that cultivating the virtues through the exercise of reason helps humans achieve eudaimonia, which can be understood as flourishing or living a fulfilling life.