“I think about the personal accomplishment, but there's more of a sense of the grand achievement by all the people who could put this man on the moon.”

1961, Speech to Special Joint Session of Congress
Context: I believe that this nation should commit itself to achieving the goal, before this decade is out, of landing a man on the moon and returning him safely to the earth. No single space project in this period will be more impressive to mankind, or more important for the long-range exploration of space; and none will be so difficult or expensive to accomplish. We propose to accelerate the development of the appropriate lunar space craft. We propose to develop alternate liquid and solid fuel boosters, much larger than any now being developed, until certain which is superior. We propose additional funds for other engine development and for unmanned explorations — explorations which are particularly important for one purpose which this nation will never overlook: the survival of the man who first makes this daring flight. But in a very real sense, it will not be one man going to the moon — if we make this judgment affirmatively, it will be an entire nation. For all of us must work to put him there.

1961, Speech to Special Joint Session of Congress
Context: I believe that this nation should commit itself to achieving the goal, before this decade is out, of landing a man on the moon and returning him safely to the earth. No single space project in this period will be more impressive to mankind, or more important for the long-range exploration of space; and none will be so difficult or expensive to accomplish. We propose to accelerate the development of the appropriate lunar space craft. We propose to develop alternate liquid and solid fuel boosters, much larger than any now being developed, until certain which is superior. We propose additional funds for other engine development and for unmanned explorations — explorations which are particularly important for one purpose which this nation will never overlook: the survival of the man who first makes this daring flight. But in a very real sense, it will not be one man going to the moon — if we make this judgment affirmatively, it will be an entire nation. For all of us must work to put him there.

"On Eating and Drinking".
Source: Idle Thoughts of an Idle Fellow (1886)
Context: Foolish people — when I say "foolish people" in this contemptuous way I mean people who entertain different opinions to mine. If there is one person I do despise more than another, it is the man who does not think exactly the same on all topics as I do.

As quoted in "World-Renowned Pediatric Neurosurgeon Dr. Benjamin Carson Attributes His Success to Confidence Gained Through Reading and Education" http://www.prnewswire.com/news-releases/world-renowned-pediatric-neurosurgeon-dr-benjamin-carson-attributes-his-success-to-confidence-gained-through-reading-and-education-132129383.html, PR Newswire (October 19, 2011)

Harvard Graduation Speech (2017)

As quoted in "Wikimedia Founder Jimmy Wales Responds," by Robin "Roblimo" Miller, Slashdot (28 July 2004)

Source: Angus, Thongs and Full-Frontal Snogging

As quoted in: Norbert Wolf, ‎Uta Grosenick (2004) Expressionism, p. 74
undated quotes

Quote in letter 169, from The Hague, January, 1882; as cited in Vincent van Gogh, Alfred H. Barr; Museum of Modern Art, New York, 1935 https://www.moma.org/documents/moma_catalogue_1996_300061887.pdf, catalog-page: Dutch Period: - 4. Potato Diggers
1880s, 1882