During 300-400 BCE, Greeks passion for reasoning and logic influenced the development of Western thought. Contribution to historical records, philosophers Herodotus and Thucydides were first to explain history; they would delve into the past to decide the facts and significance of historical events. For instance, Herodotus questioned and analyzed historical evidence to write History of the Persian War; however, not often did he differentiate between facts and legends. Later, Thucydides incorporated facts he could prove and maintain impartiality to write about History of the Peloponnesian Wars. For example, Thucydides issued both weaknesses and strengths for both Sparta and Athens. Unlike Herodotus, Thucydides made limited reference to the Greek
