
As quoted in The Life of Lord Kelvin (1910), by Silvanus Phillips, Volume 2, (2005 edition, . p. 866)
Inspiration, Edmund Clarence Stedman, ed. (1833–1908). An American Anthology, 1787–1900
As quoted in The Life of Lord Kelvin (1910), by Silvanus Phillips, Volume 2, (2005 edition, . p. 866)
Source: 1950s, The Image: Knowledge in Life and Society, 1956, p. 3 Introduction
Speech at Princeton University (1995), as quoted in a Scalia profile published by The Christian Science Monitor http://csmonitor.com/cgi-bin/durableRedirect.pl?/durable/1998/03/03/us/us.3.html.
1990s
Amor che ne la mente mi ragiona
de la mia donna disiosamente...
che lo 'ntelletto sovr'esse disvia.
Trattato Terzo, line 1.
Il Convivio (1304–1307)
The Immortal Profession: The Joys of Teaching and Learning (1976)
“What doth it serve to see sun's burning face,
And skies enamelled with both the Indies' gold?”
"What doth it Serve?"
Poems (1616)
Context: What doth it serve to see sun's burning face,
And skies enamelled with both the Indies' gold?
Or moon at night in jetty chariot roll'd,
And all the glory of that starry place?
Sudden Light http://www.theotherpages.org/poems/roset03.html#1, st. 1 (1881).
The first sentence is often quoted in isolation http://www.conservapedia.com/Charles_Darwin, with the suggestion that Darwin is saying that his speculations concerning evolution "run quite beyond the bounds of true science." In fact, as the context makes clear, Darwin is referring to his speculations concerning the geographical ranges of genera with few species.
Other letters, notebooks, journal articles, recollected statements
Source: Letter http://www.darwinproject.ac.uk/letter/entry-2109 to Asa Gray, 18 June 1857