Being Happy by Epicurus is a timeless collection that delves into the profound teachings of one of the most influential philosophers of antiquity. Epicurus, the father of Epicureanism, presents his thoughts on the nature of happiness, the methods to achieve it, and the role of philosophy as a therapeutic tool. Through his exploration of these themes, Epicurus highlights the importance of living sensibly, nobly, and justly as foundational to experiencing a pleasant life. This volume contains all the extant writings of Epicurus, providing readers with comprehensive insights into his philosophy. Among these works, his letters and principal doctrines outline his beliefs that understanding the workings of the world and dispelling irrational fears are integral to attaining happiness. Epicurus advocates for the pursuit of peace of mind and a simple life as the true path to contentment. Throughout history, certain books have had the power to transform societies. The GREAT IDEAS series by Penguin showcases such seminal works, offering readers access to writings that have sparked debate, inspired dissent, and even triggered revolutions. These texts have not only enlightened and outraged but have also comforted and provoked their audiences, ultimately shaping the course of human civilization. Being Happy stands among these monumental works, enriching and challenging readers to rethink their understanding of happiness and the good life. Epicurus' teachings invite us to question our fears, desires, and the very nature of existence, guiding us towards a life of tranquillity and fulfilment.