Georg Christoph Lichtenberg, The Waste Books, tr. R. J. Hollingdale, New York Review Books, 1990, p. 204, Notebook K, Aph. #84:
To call a proposition into question all that is needed is very often merely to fail to understand it. Certain gentlemen have been all too ready to reverse this maxim, and to assert that we fail to understand their propositions if we call them into question.
Sehr gut, Herr Lichtenberg! Sehr treffend!