authored his master's thesis on him, The Concept of Irony with Continual Reference to Socrates. There he argues that Socrates is not a moral philosopher but is purely an ironist. He also focused on Socrates's avoidance of writing: for Kierkegaard, this avoidance was a sign of humility, deriving from Socrates's acceptance of his ignorance. Not only did Socrates not write anything down, according to Kierkegaard, but his contemporaries misconstrued and misunderstood him as a philosopher, leaving us with an almost impossible task in comprehending Socratic thought. Only Plato's Apology was close to the real Socrates, in Kierkegaard's view. In his writings, he revisited Socrates quite frequently; in his later work, Kierkegaard found ethical elements in Socratic thought. Socrates was not only a subject of study for Kierkegaard, he was a model as well: Kierkegaard paralleled his task as a philosopher to Socrates. He writes, "The only analogy I have before me is Socrates; my task is a Socratic task, to audit the definition of what it is to be a Christian", with his aim being to bring society closer to the Christian ideal, since he believed that Christianity had become a formality, void of any Christian essence. Kierkegaard denied being a Christian, as Socrates denied possessing any knowledge. Friedrich Nietzsche resented Socrates's contributions to Western culture. In his first book, The Birth of Tragedy (1872), Nietzsche held Socrates responsible for what he saw as the deterioration of ancient Greek civilization during the 4th century BC and after. For Nietzsche, Socrates turned the scope of philosophy from pre-Socratic naturalism to rationalism and intellectualism. He writes: "I conceive of [the Presocratics] as precursors to a reformation of the Greeks: but not of Socrates"; "with Empedocles and Democritus the Greeks were well on their way towards taking the correct measure of human existence, its unreason, its suffering; they never reached this goal, thanks to Socrates". The effect, Nietzsche proposed, was a perverse situation that had continued down to his day: our culture is a Socratic culture, he believed. In a later publication, The Twilight of the Idols (1887), Nietzsche continued his offensive against Socrates, focusing on the arbitrary linking of reason to virtue and happiness in Socratic thinking. He writes: "I try to understand from what partial and idiosyncratic states the Socratic problem is to be derived: his equation of reason = virtue = happiness. It was with this absurdity of a doctrine