https://wist.info/schopenhauer-arthur/5919/
<i>Parerga and Paralipomena</i>, Vol. 1, "Aphorisms on the Wisdom of Life <i>[Aphorismen zur Lebensweisheit]</i>," ch. 4 "From What One Imagines <i>[Von dem, was einer vorstellt]</i>" (1851) [tr. Payne (1974)]