What source of morality does this atheist use?

ATHEIST RICHARD DAWKINS: 'ABORT' DOWN'S SYNDROME BABY, 'IMMORAL TO BRING IT INTO THE WORLD'

Atheist author Richard Dawkins provoked a firestorm Wednesday on Twitter by claiming an unborn baby with Down’s syndrome should be aborted and that it would be “immoral to bring it into the world.”

The debate with some of his one million followers began when Dawkins, 73, linked to an article at the liberal New Republic titled, “The Catholic Church prefers medieval barbarism to modern abortion,” by Jerry A. Coyne, according to The Daily Mail.

“Ireland is a civilised country except in this one area,” Dawkins said. “You’d think the Roman Church would have lost all influence.”

Irish Catholic Aidan McCourt tweeted in return to Dawkins, “994 human beings with Down’s syndrome deliberately killed before birth in England and Wales in 2012. Is that civilised?”

“Yes, it is very civilised,” Dawkins responded. “These are foetuses, diagnosed before they have human feelings.”

Dawkins later added, “Learn to think in non-essentialist ways. The question is not ‘is it human’?’ but ‘can it suffer?’”

When InYourFaceNewYorker tweeted, “I honestly don’t know what I would do if I were pregnant with a kid with Down’s syndrome. Real ethical dilemma,” Dawkins returned, “Abort it and try again. It would be immoral to bring it into the world if you have the choice.”