Daniel Guérin was a French anarcho-communist author, best known for his work 'Anarchism: From Theory to Practice', as well as his collection 'No Gods No Masters: An Anthology of Anarchism' in which he collected writings on the idea and movement it inspired, from the first writings of Max Stirner in the mid-19th century through the first half of the 20th century. He is also known for his opposition to Nazism, fascism, Stalinism and colonialism, in addition to his support for the Confederación Nacional del Trabajo (CNT) during the Spanish Civil War, and his revolutionary defence of free love and homosexuality.