Let's say you're walking around and you find a watch on the ground. As you examine it, you marvel at the intricately complex interweaving of its parts, a means to an end. Surely you wouldn't think this marvel would have come about by itself. The watch must have a maker. Just as the watch has such complex means to an end, so does nature to a much greater extent. Just look at the complexity of the human eye. Thus we must conclude that nature has a maker too.