[...] The concept of labour is the hinge of my analysis. For labour is not biologically determined. If a lion attacks an antelope, its behaviour is determined by biological need and by that alone. But if primitive man is confronted with a heap of stones, he must choose between them, by judging which will be most adaptable to his use as a tool; he selects between alternatives. The notion of alternatives is basic to the meaning of human labour, which is thus always teleological—it sets an aim, which is the result of a choice. It thus expresses human freedom. But this freedom only exists by setting in motion objective physical forces, which obey the causal laws of the material universe. The teleology of labour is thus always coordinated with physical causality, and indeed the result of any individual’s labour is a moment of physical causality for the teleological orientation (Setzung) of any other individual. The belief in a teleology of nature was theology, and the belief in an immanent teleology of history was unfounded. But there is teleology in all human labour, inextricably inserted into the causality of the physical world. This position, which is the nucleus from which I am developing my present work, overcomes the classical antinomy of necessity and freedom. But I should emphasize that I am not trying to build an all-inclusive system. The title of my work—which is completed, but I am now revising the first chapters—is Zur Ontologie des Gesellschaftlichen Seins, not Ontologie des Gesellschaftlichen Seins. You will appreciate the difference. The task I am engaged on will need the collective work of many thinkers for its proper development. But I hope it will show the ontological bases for that socialism of everyday life of which I spoke.