he expresses this value in a way which shows that he has come to terms with the anti-historical or substantialistic tendency which, as I said before, dominated the Greek mind. History, according to this tendency, cannot be a science, for there can be no science of transitory things. Its value is not a theoretical or scientific value, it can only be a practical value — the kind of value which Plato had ascribed to doxa, the quasi-knowledge of what is not eternal and intelligible but temporal and perceptible. Polybius accepts and emphasizes this notion.
