The idea of perpetual peace in European thought has a history that does not begin with but is firmly established by German philosopher Immanuel Kant. Capitalizing on this idea requires considering several political philosophers’ interpretations and receptions of Kant. Hannah Arendt (Lectures on Kant’s Political Philosophy, 1982) considers that Kantian ethical philosophy, henceforth construed as discourse interested in issues of human relationships rather than in the relationship between man and divinity, is essentially political. Philosophy, Arendt claims, can turn to politics through the Critique of Judgment (1790). In Kant’s footsteps, Arendt notes that the more terrifying the war becomes, the more reasonable people will become, and they will do their best to reach international agreements that would eventually lead to peace. Using Arendt’s contributions to political theory based on Kantian presuppositions, this study demonstrates how she finds a path to founding a philosophy that is not only humanist but also humanizing. Herein, peace must be construed along the sensible foundations of a possible ethical and political worldview awaited by the present, deeply scarred by the wounds left on the body of humankind by totalitarian ideologies and global crises.