"What will constrain science? The president says it will be up to the National Institutes of Health to come up with 'guidelines' for the use of embryonic stem cells. He specifically came out against creating embryos for the purpose of human cloning. But the question is this, if there are to be no moral, ethical, or religious restraints on the initial experiments, why should anyone expect them to be invoked later? One can only be a virgin once. After a moral or ethical line has been erased, it is nearly impossible to re-draw it."

--columnist Cal Thomas