“What makes for a livable world is no idle question. It is not merely a question for philosophers. It is posed in various idioms all the time by people in various walks of life. If that makes them all philosophers, then that is a conclusion I am happy to embrace. It becomes a question for ethics, I think, not only when we ask the personal question, what makes my own life bearable, but when we ask, from a position of power, and from the point of view of distributive justice, what makes, or ought to make, the lives of others bearable? Somewhere in the answer we find ourselves not only committed to a certain view of what life is, and what it should be, but also of what constitutes the human, the distinctively human life, and what does not. There is always a risk of anthropocentrism here if one assumes that the distinctively human life is valuable--or most valuable--or is the only way to think the problem of value. But perhaps to counter that tendency it is necessary to ask both the question of life and the question of the human, and not to let them fully collapse into one another.”