In his later writings, Friedrich Engels attempts to bring together Karl Marx and Charles Darwin. With keen insight, he demonstrates through historical and critical observations that we do not dominate nature as a conqueror dominates a foreign people – rather, we belong to it with flesh, blood, and brain, and stand amidst it. He warns against the self-destruction of humanity that disregards this connection: Let us not flatter ourselves too much with our human victories over nature. For every such victory, nature takes its revenge on us. Heinrich Detering's selection and commentary reveal a foundational text for our time.