This was Luxemburg’s single most impor­tant insight: The revolutionaries must re­main human throughout their struggle. Oth­erwise, what kind of revolution would these angry, repressed people make? Whom would it serve? And how would life be better after­wards? These thoughts never left her. They are there, year after year, in her letters to Leo, in the reasons she gives for wanting them to be close and to love each other freely. Out of these thoughts comes her op­position to war, her criticism of Lenin, her description of why she reads Tolstoy instead of Marx in prison. In Rosa Luxemburg, the line between emotion and intelligence re­mained strong and direct. All her life it was the task of her intellect to explain what her gut told her was true.