Abstract
Given the hypercomplex nature of human societies, progressive political action aimed at the structural transformation of society will always have unintended consequences, sometimes indeed the opposite of what was initially sought. The question then naturally arises: Given the essential unpredictability of its outcomes, how is such political action possible? In search of an answer to this question I turn to Immanuel Kant, and reconstruct his notion of “rational hope” (Vernunftglaube) in the Critique of Practical Reason in political terms. After outlining what I take to be a Kantian idea of socialism, I suggest that political action aiming at realising socialism must always incorporate hope as its immanent moment. Finally, I discuss a Freudian-derived objection to Kant, namely, the idea that socialism is an illusion, and answer it from a Kantian point of view.