Science and religion are direct competitors over all the great questions about the origin of the universe, the question of what it contains, the question whether it has an exogenous purpose, and the question of how it functions. Everything from the various creation myths of various religions to the logical coherence of the idea of miracles is comprehended here and the most rudimentary scientific understanding shows that belief in supernatural agencies and events is nonsense. A simple test demonstrates this: ask yourself what grounds we have for believing that there are fairies at the bottom of the garden; consider what tests might be supposed to test the hypothesis that such things exist; ask yourself how reasonable it would be to organise your life on the supposition that such fairies exist. The evidential basis of belief in gods and other supernatural forces is no different from this.
A. C. Grayling, ‘House Philosopher: An Interview with AC Grayling’