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

Once you put human life in human hands, you have started on a slippery slope that knows no boundaries.

We may simply not be wise enough to do some of the kinds of engineering things that people are talking about doing.

Many people recognize that technology often comes with unintended and undesirable side effects.

I don't like being forced to reduce my thoughts to sound bites.

The neuroscience area - which is absolutely in its infancy - is much more important than genetics.

Perhaps you could sympathize with those who seek to replace a dead child with a copy, or to copy a parent or a relative or even a celebrity.