"The central thesis of this illuminating book is that the study of social movements could benefit from including a moral-sociological perspective that highlights the importance of moral reflexivity in activism. With this 144-page-long, coherently written and well-structured book, the two authors forcefully demonstrate how revisiting classical sociology remains a fruitful source in social sciences. This is a book of relevance to any social scientist with an interest in social movements, activists' lifeworlds, moral sociology, and the works of Emile Durkheim." - Marie Leth-Espensen, Lund University, Sweden, Acta Sociologica, 61 (2)