The Visionaries follows in its protagonists' footsteps from Leningrad to New York, Spain at civil war to France under occupation, as each is uprooted by totalitarianism's ascendence. It shows them facing the injustices, unfreedom and unfathomable violence of their time as women, refugees, activists, resistance fighters - but above all as thinkers. Wolfram Eilenberger expertly distils the radical, brilliant philosophies each lived as well as developed, showing the two to be part of the same story, all testament to thought's redemptive power.