About the only question that we would say and this is a big one in our lives that we would say you don't just use pure reason to decide the answer to is anything that affects your happiness, because then gut and reason answer very different questions. So gut tells you "How do I feel about this right now?"

I mean we know that some choice makes you better off than no choice. Now do we get better off if we go from a lot of choice versus a few choices? And there I think the answer is much, much, much more complicated.

The quality of health care continues to improve, and people are living longer, but these developments mean that we're likely to eventually find ourselves in a situation in which we're forced to make difficult choices about our parents, other loved ones, or even ourselves that ultimately boil down to calculations of worth and value.

In order to 'hold fast' to something, one must allow oneself to be held to something. That commitment may be one of the hardest things to practice in a world of so much choice.

I mean can you walk to school on your own? Can you study science? Can you study math? Can you go to a normal school? Do you need to go to a special school? What is going to become of you when you grow up? Are you going to have to live on social security and SSI?

Knowledge should be a public good, and I want my ideas to have as much exposure as possible.

I do think that there are cultural differences in the extent to which we value having more and more choice.