Chapter 4 is about choice (prohairesis), an Aristotelian innovation. This is the central chapter of the book, drawing together the threads of the previous chapters. Aristotle says that virtue of character is a disposition involving choice and he defines choice as desiderative thought or thoughtful desire. He is here emphasizing each side of choice, thought, and desire. I argue that choice can belong to good, bad, and akratic people, but my main aim is to show how thought and desire are interdependent in the case of the good person. To that end, I analyze the type of thought involved in the choice of the good person – deliberation – showing that it cannot be adequately explained without mentioning virtue and hence desire and feelings. Conversely, I show that the type of desire involved, which I argue takes up the motivation both of wish (which I argue is in the rational part of the soul) and the feelings, requires thought. I conclude with some examples of choice, showing how from one point of view virtue makes the goal right, and from another it makes what contributes to the goal right. That is because virtue of character and thoughtfulness are intertwined.