George Soros---universally known for his philanthropy, progressive politics and investment success, and now under sustained attack from the far right, nationalists, and anti-Semites around the world---gives us an impassioned and much-needed defense of his core belief in open society. George Soros is among the world's most prominent public figures. He is one of the history's most successful investors and his philanthropy, led by the Open Society Foundations, has donated over $14 billion to promote democracy and human rights in more than 120 countries. But in recent years, Soros has become the focus of sustained right-wing attacks in the United States and around the world based on his commitment to open society, progressive politics and his Jewish background. In this brilliant and spirited book, Soros offers a compendium of his philosophy, a clarion call-to-arms for the ideals of an open society: freedom, democracy, rule of law, human rights, social justice, and social responsibility as a universal idea. In this age of nationalism, populism, anti-Semitism, and the spread of authoritarian governments, Soros's mission to support open societies is as urgent as it is important.