The moral truth here is obvious: anyone who feels that the interests of a blastocyst just might supersede the interests of a child with a spinal cord injury has had his moral sense blinded by religious metaphysics.
In the transmission of human culture, people always attempt to replicate, to pass on to the next generation the skills and values of the parents, but the attempt always fails because cultural transmission is geared to learning, not DNA.
The time is now, the place is here. Stay in the present. You can do nothing to change the past, and the future will never come exactly as you plan or hope for.
Having a self, even a simple self, allows you to look into the world and put a mark over what is more important and less important. It's a way of classifying the world in terms of your own needs.
It is time we recognized that belief is not a private matter; it has never been merely private. In fact, beliefs are scarcely more private than actions are, for every belief is a fount of action in potential.