“Phylogenesis is the mechanical cause of ontogenesis.1 In other words, the development of the stem, or race, is, in accordance with the laws of heredity and adaptation, the cause of all the changes which appear in a condensed form in… — Ernst Haeckel Copy Share Image
We are compelled by reflection to recognize that God is not to be placed against the material world [as in Christianity], but must be… — Ernst Haeckel Copy Share Image
Civilization and the life of nations are governed by the same laws as prevail throughout nature and organic life. — Ernst Haeckel Copy Share Image
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… — Ernst Haeckel Copy Share Image
The succession of individuals, connected by reproduction and belonging to a species, makes it possible for the specific form itself to last for ages.… — Ernst Haeckel Copy Share Image
There is no doubt that the course and character of the feared 'European war'... will become the first world war in the full sense… — Ernst Haeckel Copy Share Image
Man is not distinguished from [the animals] by a special kind of soul, or by any peculiar and exclusive psychic function, but only by… — Ernst Haeckel Copy Share Image
Where faith commences, science ends. Both these arts of the human mind must be strictly kept apart from each other. Faith has its origin… — Ernst Haeckel Copy Share Image
The nucleus has to take care of the inheritance of the heritable characters, while the surrounding cytoplasm is concerned with accommodation or adaptation to… — Ernst Haeckel Copy Share Image
The whole of organic nature on our planet exists only by a relentless war of all against all. ... The raging war of interests… — Ernst Haeckel Copy Share Image
By ecology we understand the total science of the connections of the organism to the surrounding external world. — Ernst Haeckel Copy Share Image
Both of these branches of evolutionary science, are, in my opinion, in the closest causal connection; this arises from the reciprocal action of the… — Ernst Haeckel Copy Share Image
![“We are compelled by reflection to recognize that God is not to be placed against the material world [as in Christianity], but must be placed as a 'divine power' or 'moving spirit' within the cosmos itself ... All the wonderful phenomena of nature around us, organic as well as inorganic, are only…” quote by Ernst Haeckel](https://sms4smile.com/quotes/img-quotes/2f0/ernst-haeckel-20972_christianity_we-are-compelled-by-reflection-to-recogn_133705.jpg)
![“Man is not distinguished from [the animals] by a special kind of soul, or by any peculiar and exclusive psychic function, but only by a higher degree of psychic activity, a superior stage of development.” quote by Ernst Haeckel](https://sms4smile.com/quotes/img-quotes/83b/ernst-haeckel-20972_activity_man-is-not-distinguished-from-the-animal_721744.jpg)
