“If you hear a "prominent" economist using the word 'equilibrium,' or 'normal distribution,' do not argue with him; just ignore him, or try to put a rat down his shirt.”

Press release, 10 September 2008 http://dilbert.com/blog
Context: If an economist uses a complicated model to predict just about anything, you can ignore it. By analogy, a doctor can’t tell you the exact date of your death in 50 years. But if a doctor tells you to eat less and exercise more, that’s good advice even if you later get hit by a bus. Along those same lines, economists can give useful general advice on the economy, even if you know there will be surprises. Still, be skeptical.

Source: The Wind in the Willows (1908), Ch. 7

Source: Northern Lights

Original: L'ignorante pecca spesso di educazione, arroganza e presunzione. Per lui è normale comportarsi così perché non è abituato ad acquisire cultura, secondo lui nasce saggio e generalmente per la sua natura chiusa muore sempre insieme alla sua ignoranza.
Source: prevale.net

Source: Beyond This Horizon (1948; originally serialized in 1942), Chapter 14, “—and beat him when he sneezes”, p. 132

Vicious Circle (2006)

Source: My Utmost for His Highest: Traditional Updated Edition

Quote of Friedrich, in Romanticism and realism : the mythology of nineteenth-century art - (from Chapter: Friedrich and the language of Landscape https://msu.edu/course/ha/445/rosenfriedrich.pdf), Charles Rosen and Henri Zerner; Viking Press, New York, 1984, p. 63
undated

A Dreary Story or A Tedious Story (1889)