“Happiness is not the end of duty, it is a constituent of it. It is in it and of it; not an equivalent, but an element.”
Source: Dictionary of Burning Words of Brilliant Writers (1895), P. 297.
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Henry Giles 15
Irish minister 1809–1882Related quotes

Source: 1990s and beyond, The Book of Probes : Marshall McLuhan (2011), p. 260

Source: Man for Himself (1947), Ch. 3; in Ch. 2 of his later work The Art of Loving (1956) a similar statement is made :
Context: Care and responsibility are constituent elements of love, but without respect for and knowledge of the beloved person, love deteriorates into domination and possessiveness. Respect is not fear and awe; it denotes, in accordance with the root of the word (respicere = to look at), the ability to see a person as he is, to be aware of his individuality and uniqueness. To respect a person is not possible without knowing him; care and responsibilty would be blind if they were not guided by the knowledge of the person's individuality.

The Futurist Reconstruction of the Universe http://www.italianfuturism.org/manifestos/futurist-reconstruction-of-the-universe/ Manifesto with Giacomo Balla, in: Direzione del Movimento Futurista, March 11, 1915. Translation by Caroline Tisdall, 1973.
Context: We Futurists, Balla and Depero, seek to realize this total fusion in order to reconstruct the universe by making it more joyful, in other words by an integral re-creation. 'We will give skeleton and flesh to the invisible, the impalpable, the imponderable and the imperceptible. We will find abstract equivalents for all the forms and elements of the universe, and then well will combine them according to the caprice of our inspiration, to shape plastic complexes which we will set in motion.

“There is no duty we so much underrate as the duty of being happy.”
An Apology for Idlers.
Virginibus Puerisque and Other Papers (1881)

Argument Against the Writs of Assistance (1761)