There are two forms of disappointment that interest me: religious and political disappointment. Religious disappointment flows from the realization that religious belief is not an option for us. Political disappointment flows from the fact that there is injustice - that we live in a world that is radically unjust and violent, where might seems to equal right, where the poor are exploited by the rich, etc.

I have argued that philosophy doesn't begin in wonder or in the fact that things are, it begins in a realization that things are not what they might be. It begins with a sense of a lack, of something missing, and that provokes a series of questions.

The other side of my work is political disappointment - the realization that we are living in an unjust world. "Blood is being spilled in the merriest way, as if it was champagne," Dostoevsky says. That raises the problem of justice, what it might mean in an unjust world and whether there can be an ethics and a political practice that would be able to face and face down the injustice of the present. How might we begin to think about that?

I guess what happens to a lot of people as they get older is that they get more conservative, but with me, the opposite is the case.

There is something desperately lonely about Barack Obama's universe. One gets the overwhelming sense of someone yearning for connection, for something that binds human beings together, for community and commonality, for what he repeatedly calls "the common good". This is hardly news.

If the denial of death is self-hatred, as it is to deny our freedom and live in fear of death (which is to say, to live in a form of bondage), then the acceptance and affirmation of death is indeed a form of self-love. But I'd want to make a distinction between a form of self-love which is essential to what it means to be human, and a narcissism of self-regard, like Rousseau's distinction between amour de soi and amour propre, self-love and pride.

The philosopher is someone who doesn't know, but who wants to find out.