“There is no duty we so much underrate as the duty of being happy.”
An Apology for Idlers.
Virginibus Puerisque and Other Papers (1881)
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Robert Louis Stevenson 118
Scottish novelist, poet, essayist, and travel writer 1850–1894Related quotes

“It is our duty to help those who need help; but it cannot be our duty to make others happy,”
Vol. 2, Ch. 24 "Oracular Philosophy and the Revolt against Reason"
The Open Society and Its Enemies (1945)
Context: ... the attempt to make heaven on earth invariably produces hell. It leads to intolerance. It leads to religious wars, and to the saving of souls through the inquisition. And it is, I believe, based on a complete misunderstanding of our moral duties. It is our duty to help those who need help; but it cannot be our duty to make others happy, since this does not depend on us, and since it would only too often mean intruding on the privacy of those towards whom we have such amiable intentions.

“Human happiness and moral duty are inseparably connected.”
Source: Dictionary of Burning Words of Brilliant Writers (1895), P. 297.

“The educator has the duty of not being neutral.”
Source: We Make the Road by Walking: Conversations on Education and Social Change