Ai Weiwei is arguably the world's most famous dissident artist, celebrated for his prolific and profound output of sculpture, installation, architecture, photography and film-making, which is never afraid to take on systems of power and oppression.What is less well-known, however, is his extraordinary backstory. His father was distinguished poet Ai Qing, who was a key cultural figure during the Communist rise to power but was one of over half a million intellectuals who fell afoul of the state during the Cultural Revolution. He lost everything and was exiled alongside his young son to ‘Little Siberia' in northernmost China. For the first 20 years of his life, Ai Weiwei's experience of his father was not as a writer but as an ‘enemy of the state'. Ai Weiwei tells Simon the harrowing story of his childhood, and his memories of his father's stoicism in the face of decades of persecution. He reflects on the lessons he took from his father, above all that ‘freedom of expression is the foundation for humanity.'Ai Weiwei also describes his own journey towards becoming a dissident artist and a voice for the downtrodden, and how he – like his father – continuously pays a heavy price for speaking truth to power. Ai Weiwei has carried this sense of duty with him throughout his career and recalls how he took on the Chinese state in the early days of the internet and social media, and the life-threatening consequences he faced, including 81 days in state detention, an experience he recounts in chilling detail.In the years since, he has continued to use his work and notoriety to stand up for the oppressed in the face of authoritarianism, and he speaks candidly to Simon about the vital role that truth and the preservation of memory can have in the battle for democratic freedom all over the world. Ai Weiwei reflects powerfully on the need to ‘fight' for ‘all those values' that are ‘meaningful for life itself'.