The benefits of biomedical progress are obvious, clear, and powerful. The hazards are much less well appreciated.

There's an ancient tension between wanting to savor the world as it is and wanting to improve on the world as given.

If you have easy self-contentment, you might have a very, very cheap source of happiness.

Many other countries have already banned human cloning, and there are efforts at the UN to make such a ban universal.

Our only responsibility is to live our own life and take care of our own children.

We are enmeshed in a lineage that came from somewhere and is going to make way for the next generation.

It's very hard to make arguments about the effects of cloning on family relations if family relations are in tatters.