When studying a phenomenon, the scientist must always assume there is a natural cause. This is because natural causes are the only kind its methodology can address. It is another thing to insist that science has proven there can't be any other kind. There would be no experimental method for testing the statement, "No supernatural cause for any natural phenomenon is possible."
Studies conducted on the rate at which legend developed in the ancient world have concluded that it took more than two full generations for legend to develop and wipe out a solid core of historical truth.
Nature [is] completely ruled by one simple principle — violence by the strong against the weak. If violence is totally natural, why would it be wrong for strong humans to trample weak ones? There is no basis for moral obligation unless we argue that nature is in some part unnatural. We can't know that nature is broken in some way unless there is some supernatural standard of normalcy apart from nature by which we can judge right and wrong.
Why would such a universal and uniquely human hunger [for a god] exist if it were not connected to some opportunity for fulfillment?
Anthropic constants are the 122 highly precise, interdependent environmental conditions that are very narrowly tuned to make life on Earth possible. The exact thickness of the Earth's crust is one such constant: any thicker and too much oxygen would be transferred to the crust to support life; any thinner and volcanic and tectonic activity would make life impossible. Other examples include the speed of light, atmospheric transparency, and moon-earth gravitational interaction. Astrophysicist Hugh Ross has calculated the probability that all of these constants would happen to exist for any planet in the universe, and the odds are 1 in 10^138 power {1 with 138 zeroes after it}. To put those chances in perspective, scientists estimate that there are only 10^70 atoms in the entire universe.
