Furthermore, from our knowledge of the existence of intelligence as a presently operative cause, and our constant and repeated experience that it is the only cause known to be sufficient to the production of complex specified information, we are conspicuously warranted in concluding on grounds of causal existence and uniqueness that intelligent design is the best explanation of what is ubiquitous in the historical sciences.115 - The Rise of Naturalism and its Problematic Role in Science and Culture, by Bruce L. Nelson (Page 29)