This paper reflects on the meaning and function of hope in a historical moment marked by deep crisis: climate disruption, widening inequalities, democratic fragmentation, mass displacement, and ongoing wars. Against both naïve optimism and resigned cynicism, it explores whether a form of hope can be articulated that is realistic, critical, and capable of sustaining collective action across divergent worldviews. Drawing on the methodology of the Dialop project, the paper argues that Christian theology offers resources for dialogue with Marxist traditions around shared struggles for justice, peace, and human dignity. Christian hope is presented as both eschatological and this-worldly. Rooted in trust in God's promises and the resurrection of Christ, it affirms that injustice and death do not have the final word, while simultaneously calling believers to active engagement in transforming present material conditions. Through engagement with Jürgen Moltmann's 'Theology of Hope' in dialogue with Ernst Bloch, the paper highlights convergences between Christian and Marxist understandings of hope as forward-looking, transformative, and resistant to resignation, while acknowledging differences concerning ultimate horizons of meaning. Complementary insights from Spe Salvi and Pope Francis's social teaching further illuminate how Christian hope sustains commitment to "little hopes" such as justice, peace, and ecological restoration without absolutising political outcomes. The paper concludes by outlining Dialop's principles of differentiated consensus and qualified dissent proposing hope as a shared practice that enables Christians and Marxists to collaborate against structural injustice and inequality without erasing fundamental differences. Hope, understood in this way, emerges as a critical and mobilising force for collective action in rough times.