“If the genius is an artist, then he accomplishes his work as art, but neither he nor his work of art has a telos outside him.”
Source: 1840s, Two Ethical-Religious Minor Essays (1849), P. 108
Help us to complete the source, original and additional information
Sören Kierkegaard 309
Danish philosopher and theologian, founder of Existentialism 1813–1855Related quotes

Source: 1920s, "Picasso Speaks" (1923), p. 315.
Source: 1956 - 1967, Art-as-Art Dogma' part II, (1964), p. 155

p 97.
So I think, so I paint (1947)

'Is Photography a Failure?', Alfred Stieglitz, 'Sun: 5.', March 14, 1922; as quoted on Wikipedia

"An Artistic Impression" (1909) in Style and Idea (1985), p. 189
1900s

This quote was actually composed by Louis Nizer, and published in his book, Between You and Me (1948).
Misattributed
Variant: He who works with his hands is a laborer. He who works with his hands and his head is a craftsman. He who works with his hands and his head and his heart is an artist.
Source: Labour Defended against the Claims of Capital (1825), p. 66