The Roman emperor Marcus Aurelius originally wrote the meditations collected here in the form of a personal journal during his military campaigns in the second century. In them, he reflects with great beauty and simplicity upon the Stoic virtues that lead to a happy life: self-mastery, moral strength, duty to oneself and others, detachment, and acceptance of the divine order and the way of Nature. His words of wisdom and courage continue to inspire all who struggle to live a meaningful and productive life in a troubled age.