As the final work by Ye Xiushan, one of the most famous philosophers and philosophy scholars in China, this two-volume title scrutinizes the historical development of both Chinese and Western philosophies, aiming to explore the convergence between the two philosophical traditions. Combining the historical examination and argumentation based on philosophical problematics, the two-volume set expounds the key figures and schools and critical thoughts in both Western and Chinese philosophical histories. In this first volume, the author investigates the intellectual heritage of ancient Greece and Thales of Miletus as the cradle of European philosophy, freedom in Greek philosophy, reason and negation in classical German philosophy, and the relationship between epistemology and ontology in the philosophical history, thereby illuminating the core spirit of Western philosophy and theoretical quandary facing the contemporary European philosophy. The title will appeal to scholars, student and general readers interested in philosophical history, comparative philosophy, Chinese philosophy, and Western philosophy ranging over Greek philosophy, German classic philosophy, and contemporary continental philosophy.