Daniel Dennett, the famous atheistic Darwinian philosopher from Tufts University, has recently suffered a life-threatening heart problem. He discusses his condition here and graciously thanks his believer friends for their prayers but, not believing that there's really anyone to pray to, wishes they would do something more rational and efficacious.
In the course of his remarks he makes some confused comparisons between the ethical standards of medicine and the ethical standards of religion, but we may charitably chalk these up to the effects of his medication.
In any event, his meditations may be of interest to those who are familiar with Dennett's work.