TIME AND SOUL: FROM ARISTOTLE TO ST. AUGUSTINE. By JohannesZachhuber. Berlin: De Gruyter, 2022. Pp. vii + 98. $28.99.

Is time an objective reality to which a conscious mind becomes exposed, or is it a subjective measurement uniquely attributed to the soul? Zachhuber traces the root of this question to Aristotle's aporia in Physics. This book follows the path of this aporia as it arrives in the laps of Boethus of Sidon, Alexander of Aphrodisias, Plotinus, and Augustine of Hippo. Through the works of these various thinkers, Zachhuber exposes how the seed of a single aporia develops and grows throughout time to reveal new frontiers of thought. The earlier constructive examinations of time solidify the initial inquiry as a bidirectional reality, interweaving its possible objective and subjective relations. This preliminary work prepares the way for both the cosmological developments of the Neoplatonists and the interior, psychological explorations of Augustine within the new Christian framework. As a result, this single journey through time about time reveals the potency of a single inquiry. This aporia is not merely translated across frameworks in various philosophical schools, but rather, this aporia becomes the very thread that strings these various frameworks together. Perhaps, then, Zachhuber's text is not merely an analysis of the journey of the aporia through time but a vehicle of time itself, carrying the aporia to the reader for whatever awaits. This text is a delightful read for those interested in further acquaintance with the development of thought through antiquity, philosophers ruminating on the nature of time, theologians exploring the reality of the soul in the context of eternity, and historians studying the process of development of a single idea.