The Riddle Of The Universe At The Close Of The Nineteenth Century (1901) : Kessinger Publishing : 9781436592543 : 1436592542 : 02 Jun 2008 : The Riddle of the Universe at the Close of the Nineteenth Century is a philosophical and scientific treatise written by Ernst Haeckel and published in 1901. In this book, Haeckel explores the fundamental questions of human existence, such as the origin and purpose of life, the nature of consciousness, and the relationship between science and religion. He presents a comprehensive overview of the state of knowledge in various scientific fields, including biology, physics, and astronomy, and draws on his own research and observations to offer his own theories and hypotheses. Haeckel argues that the universe is governed by natural laws and that human beings are not separate from nature but rather a part of it. He also critiques traditional religious beliefs and advocates for a more rational and scientific worldview. The Riddle of the Universe was a po