"Meditations" by Marcus Aurelius is a collection of philosophical thoughts and reflections written by the Roman emperor Marcus Aurelius in the 2nd century AD. The book is a series of personal musings and introspections on Stoic philosophy, which Aurelius had studied and adopted as a way of life. The meditations are a record of Aurelius' thoughts on various aspects of life, including the nature of the universe, the human condition, morality, and the fleeting nature of life. Through his writings, Aurelius offers insights into the human experience, exploring themes such as the importance of living in accordance with reason, the impermanence of all things, and the need for self-reflection and introspection. The book is a deeply personal and introspective work, offering a glimpse into the mind of one of history's most influential philosophers-emperors.