This study challenges the common view that Nietzsche passed through several discrete periods of thought, each based upon a different set of values, and that his work can best be understood as a collection of isolated insights. Ackermann's textual analysis shows the underlying unity of Nietzsche's thought. Ackermann, offering an introduction to Nietzsche, also covers his main texts, such as ""The Birth of Tragedy"", ""Thus Spake Zarathustra"", ""Beyond Good and Evil"" and ""Human, All too Human"".