Herbert Daniel was a significant and complex figure in Brazilian leftist revolutionary politics and social activism from the mid-1960s until his death in 1992. As a medical student, he joined a revolutionary guerrilla organization but was forced to conceal his sexual identity from his comrades, a situation Daniel described as internal exile. After a government crackdown, he spent much of the 1970s in Europe, where his political self-education continued. He returned to Brazil in 1981, becoming engaged in electoral politics and social activism to champion gay rights, feminism, and environmental justice, achieving global recognition for fighting discrimination against those with HIV/AIDS. In Exile within Exiles, James N. Green paints a full and dynamic portrait of Daniel's deep commitment to leftist politics, using Daniel's personal and political experiences to investigate the opposition to Brazil's military dictatorship, the left's construction of a revolutionary masculinity, and the challenge that the transition to democracy posed to radical movements. Green positions Daniel as a vital bridge linking former revolutionaries to the new social movements, engendering productive dialogue between divergent perspectives in his writings and activism.