The first book in Holiday's Stoic Virtues series examines courage not as the absence of fear but as the willingness to act rightly in spite of it, drawing on historical examples from Florence Nightingale to Marcus Aurelius. Holiday argues that cowardice — in its subtle, everyday forms of avoiding hard conversations, not standing for one's values, or waiting for certainty before acting — is the defining failure of the modern era. For men doing inner work, the book provides a rigorous Stoic framework for understanding the relationship between fear, integrity, and action. It is a call to the harder, more consequential kind of courage that men's work ultimately requires.