De vita beata, which translates to 'On the Blessed Life,' is a philosophical concept that explores the nature of a fulfilling and happy life. It was significant in Roman philosophy, where thinkers like Cicero examined what it means to live well, arguing that true happiness stems from virtue, wisdom, and the pursuit of a good life aligned with moral principles. This concept reflects broader themes in Roman thought, emphasizing the importance of ethical living and the role of reason in achieving happiness.