Death is, in some ways, unacceptable. It's just an astonishing fact of our being here that we die; but I think worse than that is if we live long enough, we lose everyone we love in this world. I mean people die and disappear, and we're left with this stark mystery: just the sheer not knowing of what happened to them.

Human well-being is not a random phenomenon. It depends on many factors - ranging from genetics and neurobiology to sociology and economics. But, clearly, there are scientific truths to be known about how we can flourish in this world. Wherever we can have an impact on the well-being of others, questions of morality apply.

Spiritual life can certainly follow the pattern one sees in the fake martial arts, with most teachers making nebulous and magical claims that never get tested, while their students derange themselves with weird ideas, empty rituals, and other affectations.

It is difficult to think of anything more important than providing the best education possible for our children. They will develop the next technologies, medical cures, and global industries, while mitigating their unintended effects, or they will fail to do these things and consign us all to oblivion.

We know enough at this moment to say that the God of Abraham is not only unworthy of the immensity of creation; he is unworthy even of man.

To speak specifically of our problem with the Muslim world, we are meandering into a genuine clash of civilizations, and we're deluding ourselves with euphemisms. We're talking about Islam being a religion of peace that's been hijacked by extremists. If ever there were a religion that's not a religion of peace, it is Islam.

You can do what you decide to do — but you cannot decide what you will decide to do.