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

Shallow are the souls that have forgotten how to shudder

Almost everybody is enthusiastic about the promise of biotechnology to cure disease and to relieve suffering.

I don't believe that efforts to prohibit only so-called reproductive cloning can be successful.

My job is to provide the president with the richest possible consideration, so that he knows what is at stake in whatever decision he makes.

I have nothing against respecting people who lived before, but we have no responsibility toward them.

In cloning, in contrast, reproduction is asexual - the cloned child is the product not of two but of one.