“Naturalism, the idea that everything can be explained without reference to the supernatural, for Nietzsche is both the cause of nihilism and the only path to take as we struggle on after the death of God. It is therefore from a naturalistic perspective that we will best understand some of Nietzsche’s otherwise strange exhortations about how to go on living – his advocacy for a certain diet and climate, for instance. What is basic for humanity is not theology and philosophy, but physiology and psychology. For example, Nietzsche says he is interested in one question “on which the ‘salvation of humanity’ depends far more than on any theologians’ curio: the question of nutrition” (Ecce Homo, ‘Why I am So Clever’).“
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