
Of the Origin and Progress of Language (Edinburgh and London: J. Balfour and T. Cadell, 2nd ed., 1774), Vol. I, Book II, Ch. II, pp. 224-225 https://archive.org/stream/originandprogre01conggoog#page/n251/mode/2up.
"Population and Emigration" in National Gazette (21 November 1791) http://www.constitution.org/jm/17911121_population.htm; also quoted in If Men Were Angels: James Madison & the Heartless Empire of Reason (1995) by Richard K. Matthews. p. 44
1790s
Of the Origin and Progress of Language (Edinburgh and London: J. Balfour and T. Cadell, 2nd ed., 1774), Vol. I, Book II, Ch. II, pp. 224-225 https://archive.org/stream/originandprogre01conggoog#page/n251/mode/2up.
Source: 1970s, Ecodynamics: A New Theory Of Societal Evolution, 1978, p. 110
“Among the beasts of prey, man is certainly the worst.”
This expression, very commonly made nowadays, is only relatively true. Not man as such, but man in connection with wealth is a beast of prey. The richer a man, the greater his greed for more. We may call such a monster the "beast of property". It now rules the world, makes mankind miserable, and gains in cruelty and voracity with the progress of our so-called "civilization".
The Beast of Property (1884)
1950s, The Russell-Einstein Manifesto (1955)