Naturalism is the dominant philosophy of the age. It might be characterized as the view that the only real facts are facts of natural science, or that only statements of natural science are really true. But perhaps this scientistic formulation underestimates the depth and everydayness of the dominance of naturalism. More informally, we might say that naturalism is the view that the world is a world of natural objects and natural phenomena, that the only properties of these objects are natural properties, and the relations between them are all natural relations – in short, there are only natural facts, natural truths.