David Quinn is one of Ireland's best known religious and social affairs commentators. For over six years, he was editor of The Irish Catholic, Ireland's main Catholic weekly newspaper. He has written weekly opinion columns for The Sunday Times and The Sunday Business Post. He has contributed to publications such as First Things, the Human Life Review and the Wall Street Journal (Europe edition). Currently, he is working freelance and contributes weekly columns to The Irish Independent, Ireland's biggest selling daily paper, and The Irish Catholic. He appears regularly on Irish radio and television current affairs programmes. In January 2007, he founded the Iona Institute, a think-tank promoting the practice of religion and the family based on marriage.

Clinton Richard Dawkins (born March 26, 1941) is a British ethologist, evolutionary biologist, and popular science writer who holds the Charles Simonyi Chair for the Public Understanding of Science at Oxford University.

Dawkins first came to prominence with his 1976 book The Selfish Gene, which popularised the gene-centered view of evolution and introduced the term meme into the lexicon, helping found memetics. In 1982, he made a widely cited contribution to the science of evolution with the theory, presented in his book The Extended Phenotype, that phenotypic effects are not limited to an organism's body but can stretch far into the environment, including into the bodies of other organisms. He has since written several best-selling popular books, and appeared in a number of television and radio programmes, concerning evolutionary biology, creationism, and religion.

Dawkins is an outspoken atheist, secular humanist, and sceptic, and he is a prominent member of the Brights movement. In a play on Thomas Huxley's epithet "Darwin's bulldog", Dawkins' impassioned advocacy of evolution has earned him the appellation "Darwin's rottweiler".

Here's the debate:

David Quinn debates Richard Dawkins on Ryan Tubridy