Abstract

In the history of philosophy, Plato’s theory of Forms has enchanted many philosophers, but it has faced more adversaries than proponents. Although it is unusual for contemporary philosophers to believe in the Platonic Forms, I confront Plato seriously and try to defend his thought by reflecting on its reception in modern Japan. For this purpose, the Japanese word “risō” (理想), which was originally a translation of the Platonic “Idea” or “Form,” will give us valuable hints.I discuss Aristotle, Friedrich Nietzsche and Karl Popper, each of whom raised fundamental questions about the Forms as transcendent entities. First, Aristotle ignores one fundamental factor of the Forms, i.e., Eros: we aspire for the perfect or ideal state in our life with reference to the Forms. Next, Popper misses the important difference between the Form and the Ideal: i.e., the ultimate reality and its expressed form in words. Aspiring for the latter does not necessarily lead us to totalitarianism. Then, I argue that Nietzsche shares the same framework with Plato in considering the notion of “ideal.” We have to face his radical question of whether we should hold an “ideal” in everyday life.Finally, I introduce a brief history of how philosophers confronted reality by learning Plato in modern Japan. Michitaro Tanaka, in particular, cast critical eyes on the pre- and post-war society by studying Plato’s philosophy. To consider and discuss the Forms changes views and meanings of the world and of life. Plato thereby invites us to this common search through his dialogues, and leads us to the ideal (risō).