Written over a period of thirty-five years, these essays explore the topics of causation, time, fate, determinism, natural teleology, different conceptions of the human soul, the idea of the highest good and the human significance of leisure. While most of the essays take as their starting-point some theme in Ancient Greek philosophy, they are meant not as exegesis but as distinctive and independent contributions to live philosophizing. Written with clarity, precision without technicality, and philosophical imagination, they will engage a wide range of readers, including scholars and students of Ancient Greek philosophy and others working on more contemporary analytical concerns.