Thomas Huxley Quotes
If there is anything in the world which I do firmly believe in, it is the universal validity of the law of causation.
Citations
Huxley, Thomas H. "On the Hypothesis that Animals are Automata, and its History." Collected Essays: Method and Results, vol. 1, D. Appleton and Company, 1893, p. 244.
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Thomas Henry Huxley PC FRS HonFRSE FLS was an English biologist and anthropologist specialising in comparative anatomy. He is known as "Darwin's Bulldog" for his advocacy of Charles Darwin's theory of evolution.