The wise man fails to observe the dust that the housemaid has not dusted, the potato that the cook has not cooked, and the soot that the sweep has not swept. I do not mean that he takes no steps to remedy these matters, provided he has time to do so; I mean only that he deals with them without emotion.
Source: The Conquest of Happiness, 1930
More info.:
https://russell-j.com/beginner/HA27-050.HTM