Source: The Metaphysical Foundations of Modern Physical Science (1925), p. 19
“If Man be separated by no greater structural barrier from the brutes than they are from one another—then it seems to follow that if any process of physical causation can be discovered by which the genera and families of ordinary animals have been produced, that process of causation is amply sufficient to account for the origin of Man.”
Source: 1860s, Evidence as to Man's Place in Nature (1863), Ch.2, p. 125
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Thomas Henry Huxley 127
English biologist and comparative anatomist 1825–1895Related quotes

Source: 1860s, Evidence as to Man's Place in Nature (1863), Ch.2, p. 126

“I have been not been able to discover any character by which man can be distinguished from the ape”
Fauna Suecica (1746) as quoted by Jeffrey H. Schwartz, Sudden Origins: Fossils, Genes, and the Emergence of Species (1999)
Context: As a natural historian according to the principles of science, up to the present time I have been not been able to discover any character by which man can be distinguished from the ape; for there are somewhere apes which are less hairy than man, erect in position, going just like him on two feet, and recalling the human species by the use they make of their hands and feet, to such an extent, that the less educated travellers have given them out as a kind of man.

Source: Causality: Models, Reasoning, and Inference, 2000, p. 309, as cited in: Rinke Hoekstra (2009), Ontology Representation: Design Patterns and Ontologies... p. 181

Source: 1860s, Evidence as to Man's Place in Nature (1863), Ch.2, p. 83

Source: The Instinct of Workmanship and the State of the Industrial Arts, 1914, p. 67
What truly makes a man who he is? Is it the strength of his arms, or the courage of his soul? You have your own soul, Harad. You are not Druss. Live your own life."
Source: Drenai series, The Swords of Night and Day, Ch. 8