Sören Kierkegaard (1813–1855) Danish philosopher and theologian, founder of Existentialism
Søren Kierkegaard, Purity of Heart is to Will One Thing, 1847 p. 197-198
1840s, Upbuilding Discourses in Various Spirits (1847), Purity of Heart (1847)
Source: Dave Barry Turns Fifty
Sören Kierkegaard (1813–1855) Danish philosopher and theologian, founder of Existentialism
Søren Kierkegaard, Purity of Heart is to Will One Thing, 1847 p. 197-198
1840s, Upbuilding Discourses in Various Spirits (1847), Purity of Heart (1847)
Benjamin Boretz (1934) American composer
from Meta-Variations: studies in the foundations of musical thought Red Hook, N.Y. : Open Space, 1995.
Milton Friedman (1912–2006) American economist, statistician, and writer
“Interview with Milton Friedman”, Playboy magazine (Feb. 1973)
Leslie Weatherhead (1893–1976) English theologian
Source: The Christian Agnostic (1965), p.49, [ellipsis added]
Friedrich Engels (1820–1895) German social scientist, author, political theorist, and philosopher
Letter to Jean-Richard Bloch http://www.marxists.org/archive/marx/works/1890/letters/90_09_21.htm (September 21, 1890)
Celia Green (1935) British philosopher
Letters from Exile (2004)
Friedrich Nietzsche book Human, All Too Human
Section IX, "Man Alone with Himself" / aphorism 495
Human, All Too Human (1878), Helen Zimmern translation
“We always may be sure that every man-made thing arises from a problem as a purposeful solution.”
George Kubler (1912–1996) American art historian
Source: The Shape of Time, 1982, p. 8.