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Quote by Ernst Haeckel

“An irrefutable proof that such single-celled primaeval animals really existed as the direct ancestors of Man, is furnished according to the fundamental law of biogeny by the fact that the human egg is nothing more than a simple cell.”

Quote by Ernst Haeckel

Book:The History of Creation: Or The Development of the Earth and Its Inhabitants by the Action of Natural Causes. A Popular Exposition of the Doctrine of Evolution in General, and of that of Darwin, Goethe, and Lamarck in Particular. From the 8th German Ed. of Ernst Haeckel ... The Translation Rev. by E. Ray Lankester

Work

The History of Creation: Or The Development of the Earth and Its Inhabitants by the Action of Natural Causes. A Popular Exposition of the Doctrine of Evolution in General, and of that of Darwin, Goethe, and Lamarck in Particular. From the 8th German Ed. of Ernst Haeckel ... The Translation Rev. by E. Ray Lankester

This book offers a detailed and accessible explanation of the evolutionary theory, highlighting the works of key figures in the field. It is a translation of Ernst Haeckel's original German work, which has been revised and annotated by E. Ray Lankester to provide a clearer understanding of the concepts of evolution and the contributions of various scientists. more

Author

German philosopher, biologist, artist, born on February 16, 1834, and died on August 9, 1919. Ernst Haeckel is renowned for his contributions to the fields of evolution, morphology, cytology, and the philosophy of natural sciences. more

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“During cycles long anterior to the creation of the human race, and while the surface of the globe was passing from one condition to another, whole races of animals-each group adapted to the physical conditions in which they lived-were successively created and exterminated.”

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“Evolution in the biosphere is therefore a necessarily irreversible process defining a direction in time; a direction which is the same as that enjoined by the law of increasing entropy, that is to say, the second law of thermodynamics. This is far more than a mere comparison: the second law is founded upon considerations identical to those which establish the irreversibility of evolution. Indeed, it is legitimate to view the irreversibility of evolution as an expression of the second law in the biosphere.”

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“In every animal which has not passed the limit of its development, a more frequent and continuous use of any organ gradually strengthens, develops and enlarges that organ, and gives it a power proportional to the length of time it has been so used; while the permanent disuse of any organ imperceptibly weakens and deteriorates it, and progressively diminishes its functional capacity, until it finally disappears.”

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