Norman Thomas and his brothers' upbringing prepared them for a life of service-but their calls to conscience threatened to tear them apart Conscience is Louisa Thomas's beautifully written account of the remarkable Thomas brothers at the turn of the twentieth century. At a time of trial, each brother struggled to understand his obligation to his country, family, and faith. Centered around the story of the eldest, Norman Thomas (later the six-time Socialist candidate for president), the book explores the difficult decisions the four brothers faced with the advent of World War I. Sons of a Presbyterian minister and grandsons of missionaries, they shared a rigorous moral upbringing, a Princeton education, and a faith in the era's spirit of hope. Two became soldiers.