John Forbes Nash Jr. was a prominent American mathematician known for his groundbreaking work in game theory, which earned him the 1994 Nobel Prize in Economic Sciences. Nash proposed the Nash Equilibrium, a key concept that explains how individuals make decisions in a competitive environment, influencing various fields like economics, political science, and evolutionary biology. His theories have helped shape modern understanding of strategic interactions among rational decision-makers. Despite his academic success, Nash faced significant personal challenges, including a struggle with schizophrenia that severely affected his life and work. His mental health issues led to years of institutionalization and disrupted his career. Nevertheless, he continued to contribute to mathematics and science, exhibiting a remarkable resilience that ultimately allowed him to regain recognition in the academic community. Nash's life story gained wider fame through the biographical film "A Beautiful Mind," which depicted his genius and battles with mental illness. The film contributed to a greater public understanding of schizophrenia and the complexity of human cognition. Nash's legacy endures in both mathematics and popular culture, inspiring those who deal with similar challenges and highlighting the interplay between genius and mental health. John Forbes Nash Jr. was an influential American mathematician whose work in game theory transformed various academic fields. His concept of the Nash Equilibrium has become foundational in understanding strategic decision-making. Nash faced considerable personal difficulties, particularly with schizophrenia, which impacted his life and career. Despite these challenges, he persisted and made significant contributions to mathematics, showcasing remarkable resilience. His life and achievements were popularized by the film "A Beautiful Mind," which raised awareness about mental illness. Nash's legacy continues to inspire and educate, shedding light on the complexities of genius and mental health challenges.