With terminal illness, your fate is sealed. Morally, we're more comfortable with a situation where you don't cause death, but you hasten it. We think that's a bright line. Comparing the U.S. with Switzerland, where assisted suicide is legal for patients suffering 'intolerable health problems.'

The use of fetuses as organ and tissue donors is a ticking time bomb of bioethics.

Renegade scientists and totalitarian loonies are not the folks most likely to abuse genetic engineering. You and I are-not because we are bad but because we want to do good. In a world dominated by competition, parents understandably want to give their kids every advantage. ... The most likely way for eugenics to enter into our lives is through the front door as nervous parents ... will fall over one another to be first to give Junior a better set of genes.

Bodies aren't the same as Coca-Cola cans.

[Cloning] can't make you immortal because clearly the clone is a different person. If I take twins and shoot one of them, it will be faint consolation to the dead one that the other one is still running around, even though they are genetically identical. So the road to immortality is not through cloning.

With terminal illness, your fate is sealed. Morally, we're more comfortable with a situation where you don't cause death, but you hasten it. We think that's a bright line. Comparing the U.S. with Switzerland, where assisted suicide is legal for patients suffering 'intolerable health problems.'

The time to talk about it [genetic engineering to improve a baby's genes] in schools and churches and magazines and debate societies is now. If you wait, five years from now the gene doctor will be hanging out the MAKE A SMARTER BABY sign down the street.