"It is tempting to think that bioengineering our children and ourselves for success in a competitive society is an exercise of freedom. But changing our nature to fit the world, rather than the other way around, is actually the deepest form of disempowerment. It distracts us from reflecting critically on the world. It deadens the impulse to social and political improvement. So I say rather than bioengineer our children and ourselves to fit the world, let's instead create social and political arrangements more hospitable to the gifts and the limitations of the imperfect human beings that we are."
– From the Reith Lectures given earlier this year by Michael Sandel, quoted at Biopolitical Times blog.
Sandel's book about the ethics of genetic engineering just came out in paperback: The Case against Perfection: Ethics in the Age of Genetic Engineering.