If philosophy is to be a valuable part of life, we have to appreciate it for its own sake, and not just for what it's done for us lately.

Philosophy has to be enquiring; it can take nothing on faith, and its methods are based not on the blind acceptance of authority, but on establishing truths by reason and argument.

Philosophy is at its most engaged when it is impure. What is being recovered from the Ancient Greek model is not some lost idea of philosophy's pure essence, but the idea that philosophy is mixed up with everything else.

I don't feel proprietorial about the problems of philosophy. History has taught us that many philosophical issues can grow up, leave home and live elsewhere.

For me, Twitter works best as a way of taking pictures of being stuck in traffic on the Brooklyn Bridge. If people really want to read really funny quips about life, parenting, and pop culture, then by all means read Michael Ian Black's tweets.

I have always been clear that cinema is not my priority and that my family is.

But, I love making independent films. I love it! You create a family, and you sweat, you bleed, you cry, you shout, you laugh and you hug. It's such an extraordinary experience, making independent films.

It's easy to blame the nature-deficit disorder on the kids' or the parents' back, but they also need the help of urban planners, schools, libraries and other community agents to find nature that's accessible.