Take one of my favourite experiments, for example. I see a little ball rattling around in a wheel. Where will that ball stop? You, being less intellectual than I, don't care where it stops I do. Instantly my scientific curiosity is aroused; I reason logically; I evolve an opinion; I back that opinion; and I remain busy and poor.
The Firing Line, Chapter XIII (p. 203), D. Appleton & Co. 1908