“Now, if instituting comparisons in both directions, we place the lowest and most ape-like men (the Austral Negroes, Bushmen, and Andamans, etc.), on the one hand, together with the most highly developed animals, for instance, with apes, dogs, and elephants, and on the other hand, with the most highly developed men—Aristotle, Newton, Spinoza, Kant, Lamarck, or Goethe—we can then no longer consider the assertion, that the mental life of the higher mammals has gradually developed up to that of man, as in any way exaggerated. If one must draw a sharp boundary between them, it has to be drawn between the most highly developed and civilized man on the one hand, and the rudest savages on the other, and the latter have to be classed with the animals.”
Ernst Haeckel, The History of Creation: Or the Development of the Earth and its Inhabitants by the Action of Natural Causes [2 vols.]. Translated from the German by E. Ray Lankester. (New York: D. Appleton, 1876)
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Baruch Spinoza 210
Dutch philosopher 1632–1677Related quotes

Source: Words of a Sage : Selected thoughts of African Spir (1937), p. 61.

Footnote: It is because of his brain that he has risen above the animals. Guess which animals he has risen above.
The Modern Man
How to Tell Your Friends from the Apes (1931)
Kurt Koffka. Growth of the Mind. An Introduction to Child Psychology. New York: Harcourt, Brace, 1924. p. 388 (2013 edition)

When asked by Anton du Plessis of the Institute for Security Studies if he agreed that Zimbabwe was a failed state, as quoted by Carien du Plessis in Mugabe: Zim 'is the most highly developed country in Africa after SA' http://www.news24.com/Africa/Zimbabwe/mugabe-zim-is-the-most-highly-developed-country-in-africa-after-sa-20170504, News 24 (4 May 2017)
2010s

“By far the most dangerous animal on the planet was an invasive species of ape.”
Source: Vorkosigan Saga, Gentleman Jole and the Red Queen (2016), Chapter 17 (p. 386)

J 115
Aphorisms (1765-1799), Notebook J (1789)