There is no arguing with a mood; it can be changed by some fortunate event, or by a change in our bodily condition, but it cannot be changed by argument. I have frequently experienced myself the mood in which I felt that all is vanity; I have emerged from it not by means of any philosophy, but owing to some imperative necessity of action.
Source: The Conquest of Happiness, 1930, chap.2: Byronic unhappiness
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