The Riddle of the Universe at the Close of the Nineteenth Century

At the twilight of the 19th century, Germany's most vociferous Darwinian champion set out to solve the great riddles of existence. Ernst Haeckel, the zoologist who practically invented the term 'ecology' and whose artistry shaped how generations visualized the natural world, argues here that science has unveiled the machinery of the universe but humanity's moral and spiritual understanding has lagged catastrophically behind. He presents twelve 'world-riddles' - the nature of matter and force, the origin of life, the mystery of consciousness - and offers his radical monistic philosophy as the answer: a unified, naturalistic vision that rejects God, free will, and the immortal soul in favor of a cosmos governed entirely by natural law. This is Haeckel at his most ambitious, synthesizing Darwinism, comparative anatomy, and philosophical materialism into a grand cosmic narrative that scandalized both the church and cautious academics. The book made him famous, sparked international debate, and shaped how generations understood the relationship between science and existence. For readers interested in the intellectual history of modernity, it remains an essential artifact - a window into both the soaring ambitions and troubling blind spots of late Victorian science.