“With respect to the function of the calciferous glands, it is probable that they primarily serve as organs of excretion, and secondarily as an aid to digestion.”
Source: The Formation of Vegetable Mould through the Action of Worms (1881), Chapter 1: Habits of Worms, p. 49. http://darwin-online.org.uk/content/frameset?pageseq=64&itemID=F1357&viewtype=image
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Charles Darwin 161
British naturalist, author of "On the origin of species, by… 1809–1882Related quotes
“Every organ is a hormone-producing gland.”
The Fabric of Mind (1985)

Source: Quotes 1960s-1980s, 1970s, Government in the Future, 1970, p. 143.

“The state is primarily an organization for killing foreigners.”
Bertrand Russell Speaks His Mind (1960), p. 83
1960s
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1920s, Viereck interview (1929)

Interview in Playboy (November 1999)
Source: The Functions of the Executive (1938), p. vii