Shepherds with Picnic, by Jacob Wothly and Emile Mangel du Mesnil, c. 1864. The Metropolitan Museum of Art, The Horace W. Goldsmith Foundation Fund, through Joyce and Robert Menschel, 2016.
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Miscellany
As a result of technological advances and shortages of enslaved workers, water power became used more widely in the Roman Empire around the late third century; the earliest known depiction of a water-powered stone sawmill was produced around this time in Hierapolis. Later, in 371, the poet Ausonius wrote an ode to the Moselle River: “He turns his millstones in furious revolutions and drives the shrieking saws through smooth blocks of marble.”
The fundamental concept in social science is power, in the same sense in which energy is the fundamental concept in physics.
—Bertrand Russell, 1938
