“Les pires difficultés d’un homme commencent quand il peut faire ce qui lui plaît.”
[A] man’s worst difficulties begin when he is able to do as he likes.
en
Science and education, 1893
Thomas Henry Huxley, né le 4 mai 1825 à Ealing et mort le 29 juin 1895 à Eastbourne, est un biologiste, paléontologue et philosophe britannique. Wikipedia

“Les pires difficultés d’un homme commencent quand il peut faire ce qui lui plaît.”
[A] man’s worst difficulties begin when he is able to do as he likes.
en
Science and education, 1893
"Joseph Priestley" (1874) http://aleph0.clarku.edu/huxley/CE3/Priest.html <br class="br">1870s
Source: 1860s, Evidence as to Man's Place in Nature (1863), Ch.2, p. 125
1860s, Reply to Charles Kingsley (1860)
1870s, On the Hypothesis that Animals are Automata, and Its History (1874)
1870s, On the Hypothesis that Animals are Automata, and Its History (1874)
1870s, On the Hypothesis that Animals are Automata, and Its History (1874)
[The Struggle for Existence: A Programme, The Nineteenth Century, 23, February 1888, 161–180, https://babel.hathitrust.org/cgi/pt?id=uc1.a0012287587&view=1up&seq=173] (quote from p. 163)
1880s