"Both of these branches of evolutionary science, are,……" — Ernst Haeckel
"Both of these branches of evolutionary science, are, in my opinion, in the closest causal connection; this arises from the reciprocal action of the laws of heredity and adaptation."
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Ernst Haeckel
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23 Quotes by Ernst Haeckel
Ernst Haeckel has 23 quotes on this site.
A few more worth reading:
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An irrefutable proof that such single-celled primaeval animals really existed as the direct ancestors of Man, is furnished according to…
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It is, however, a most astonishing but incontestable fact, that the history of the evolution of man as yet constitutes…
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Nothing is constant but change! All existence is a perpetual flux of "being and becoming!" That is the broad lesson…
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The succession of individuals, connected by reproduction and belonging to a species, makes it possible for the specific form itself…
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In the course of individual development, inherited characters appear, in general, earlier than adaptive ones, and the earlier a certain…
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The nucleus has to take care of the inheritance of the heritable characters, while the surrounding cytoplasm is concerned with…
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Where faith commences, science ends. Both these arts of the human mind must be strictly kept apart from each other.…
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As our mother earth is a mere speck in the sunbeam in the illimitable universe, so man himself is but…
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There is no doubt that the course and character of the feared 'European war'... will become the first world war…
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Ontogeny re-capitulates phylogeny.
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Civilization and the life of nations are governed by the same laws as prevail throughout nature and organic life.
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Man is not above nature, but in nature.
See all 23 quotes by Ernst Haeckel »
More Action Quotes
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Forgiveness is the key to action and freedom.
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Revolutionaries do not make revolutions. The revolutionaries are those who know when power is lying in the street and then…
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Under conditions of tyranny it is far easier to act than to think.
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Action without a name, a who attached to it, is meaningless.
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All human actions have one or more of these seven causes: chance, nature, compulsions, habit, reason, passion, desire.
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Moral excellence comes about as a result of habit. We become just by doing just acts, temperate by doing temperate…
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Well begun is half done.
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A tragedy is a representation of an action that is whole and complete and of a certain magnitude. A whole…
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Thou wilt find rest from vain fancies if thou doest every act in life as though it were thy last.
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We become just by performing just action, temperate by performing temperate actions, brave by performing brave action.
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Every art and every inquiry, and similarly every action and choice, is thought to aim at some good; and for…
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What the statesman is most anxious to produce is a certain moral character in his fellow citizens, namely a disposition…
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