The irrationality of disgust suggests it is unreliable as a source of moral insight. There may be good arguments against gay marriage, partial-birth abortions and human cloning, but the fact that some people find such acts to be disgusting should carry no weight.

Some scholars argue that although the brain might contain neural subsystems, or modules, specialized for tasks like recognizing faces and understanding language, it also contains a part that constitutes a person, a self: the chief executive of all the subsystems.

Morality is often seen as an innovation, like agriculture and writing. From this perspective, babies are pint-sized psychopaths, self-interested beings who need to be taught moral notions such as the wrongness of harming another person.

Part of the satisfaction of tattling surely comes from showing oneself to adults as a good moral agent, a responsible being who is sensitive to right and wrong. But I would bet that children would tattle even if they could do so only anonymously. They would do it just to have justice done.

You can never take those you love for granted, and you have to be willing to be open and really communicate with one another to make any relationship work. And that's just it: relationships take work, and they take compromise and compassion and understanding.

Marriage encourages the men and women who together create life to unite in a bond for the protection of children.

During my last voyage to America, I enjoyed the happiness of seeing that revolution completed, and, thinking of the one that would probably occur in France, I said in a speech to Congress, published everywhere except in the 'French Gazette,' 'May this revolution serve as a lesson to oppressors and as an example to the oppressed!'

I was very fortunate to grow up with parents who love to travel, so I traveled from a young age. My dad's a heart surgeon and goes to conferences all over the world. By the time I was seven, I traveled outside the country for the first time. We went to Paris. The next year, we went to London, and then Brussels.