Different views in the scientific community:

When you are searching for truth you should use every possible avenue, including revelation," said Dr. Murray, who is a member of the Pontifical Academy, which advises the Vatican on scientific issues, and who described the influence of his faith on his work in his memoir, "Surgery of the Soul" (Science History Publications, 2002).

Since his appearance at the City College panel, when he was dismayed by the tepid reception received by his remarks on the incompatibility of good science and religious belief, Dr. Hauptman said he had been discussing the issue with colleagues in Buffalo, where he is president of the Hauptman-Woodward Medical Research Institute.

"I think almost without exception the people I have spoken to are scientists and they do believe in the existence of a supreme being," he said. "If you ask me to explain it – I cannot explain it at all."

But Richard Dawkins, an evolutionary theorist at Oxford, said that even scientists who were believers did not claim evidence for that belief. "The most they will claim is that there is no evidence against," Dr. Dawkins said, "which is pathetically weak. There is no evidence against all sorts of things, but we don’t waste our time believing in them."

Dr. Collins said he believed that some scientists were unwilling to profess faith in public "because the assumption is if you are a scientist you don’t have any need of action of the supernatural sort," or because of pride in the idea that science is the ultimate source of intellectual meaning.

But he said he believed that some scientists were simply unwilling to confront the big questions religion tried to answer. "You will never understand what it means to be a human being through naturalistic observation," he said. "You won’t understand why you are here and what the meaning is. Science has no power to address these questions – and are they not the most important questions we ask ourselves?"