Artists and literary men consider it de rigueur to be unhappy in their marriages, but men of science quite frequently remain capable of old-fashioned domestic bliss. The reason for this is that the higher parts of their intelligence are wholly absorbed by their work, and are not allowed to intrude into regions where they have no functions to perform.
Source: The Conquest of Happiness, 1930, chap. 10: Is Happiness Still possible?
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