We know next to nothing of what we're going to know in 20 or 50 years.

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

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

The abortion controversy is important for what it says about our stance toward procreation and children altogether.

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

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

The human animal has evolved as a preeminently social animal.