That brought an angry rejoinder from Richard P. Sloan, a professor of behavioral medicine at Columbia University Medical Center, who said his own book, “Blind Faith: The Unholy Alliance of Religion and Medicine,” was written to counter “garbage research” financed by Templeton on, for example, the healing effects of prayer.

Image Credit... Tad Majewski

With atheists and agnostics outnumbering the faithful (a few believing scientists, like Francis S. Collins, author of “The Language of God: A Scientist Presents Evidence for Belief,” were invited but could not attend), one speaker after another called on their colleagues to be less timid in challenging teachings about nature based only on scripture and belief. “The core of science is not a mathematical model; it is intellectual honesty,” said Sam Harris, a doctoral student in neuroscience and the author of “The End of Faith: Religion, Terror and the Future of Reason” and “Letter to a Christian Nation.”

“Every religion is making claims about the way the world is,” he said. “These are claims about the divine origin of certain books, about the virgin birth of certain people, about the survival of the human personality after death. These claims purport to be about reality.”

By shying away from questioning people’s deeply felt beliefs, even the skeptics, Mr. Harris said, are providing safe harbor for ideas that are at best mistaken and at worst dangerous. “I don’t know how many more engineers and architects need to fly planes into our buildings before we realize that this is not merely a matter of lack of education or economic despair,” he said.

Dr. Weinberg, who famously wrote toward the end of his 1977 book on cosmology, “The First Three Minutes,” that “the more the universe seems comprehensible, the more it also seems pointless,” went a step further: “Anything that we scientists can do to weaken the hold of religion should be done and may in the end be our greatest contribution to civilization.”

With a rough consensus that the grand stories of evolution by natural selection and the blossoming of the universe from the Big Bang are losing out in the intellectual marketplace, most of the discussion came down to strategy. How can science fight back without appearing to be just one more ideology?