John Galt is a fictional character in Ayn Rand's novel, "Atlas Shrugged." He represents the ideal man, embodying the principles of individualism and rational self-interest. Galt is known for his philosophical beliefs and his role in leading a strike of the mind, where the most productive members of society withdraw their talents from a world that they feel exploits them. In the story, Galt's famous question, "Who is John Galt?" symbolizes the search for meaning and purpose in a society that discourages innovation and achievement. His character serves as a catalyst for the novel's exploration of capitalism, freedom, and the consequences of government overreach.