“… That no single, individual moment is in and of itself unendurable.”

The Passion (1987)

Hagakure (c. 1716)
Source: Hagakure: The Book of the Samurai
Context: There is surely nothing other than the single purpose of the present moment. A man's whole life is a succession of moment after moment. If one fully understands the present moment, there will be nothing else to do, and nothing else to pursue. Live being true to the single purpose of the moment.
Everyone lets the present moment slip by, then looks for it as though he thought it were somewhere else.

Source: Seth, Dreams & Projections of Consciousness, (1986), p. 285

Chap. 3 : The Chronology of Cooperation
Proposition 7.
The Evolution of Cooperation (1984; 2006)

Source: The World and Other Places: Stories

Source: All the King's Men' A search for the colonial ideas of some advisers and "accomplices" of Leopold II (1853-1892). (Hannes Vanhauwaert), 4. Viceroys without colonial aspirations? Jules Van Praet (1806-1887) http://www.ethesis.net/leopold_II/leopold_II.htm#2.%20 The colonization of Santo Tomas in Guatemala marked a turning point in Belgium's young colonial history. The fiasco in Guatemala traumatized Belgian politics and also played a part in the increasing reticence of Van Praet, who passed on to the Duke of Brabant (Leopold II) the liberal criticisms of Minister Frère-Orban against the old-fashioned techniques of colonization with privileged societies or differential systems. JANSSENS, G. STENGERS, J. New light on Leopold I and II. The Goffinet Archive, 253.

Original: A volte, una sola reazione mostra la vera natura di un individuo.

Third letter on sunspots (December 1612) to Mark Wesler (1558 - 1614), as quoted in Discoveries and Opinions of Galileo (1957) by Stillman Drake, p. 134 - 135; Italian text online at Liber Liber http://www.liberliber.it/biblioteca/g/galilei/lettere/html/lett08c.htm, also from IntraText http://www.intratext.com/IXT/ITA0188/_PQ.HTM.
Variant translation: In questions of science the authority of a thousand is not worth the humble reasoning of a single individual.
As quoted in Biographies of Distinguished Scientific Men (1859) by François Arago, as translated by Baden Powell, Robert Grant, and William Fairbairn, p. 365
Other quotes
Variant: In the sciences, the authority of thousands of opinions is not worth as much as one tiny spark of reason in an individual man.
Context: for in the sciences the authority of thousands of opinions is not worth as much as one tiny spark of reason in an individual man. Besides, the modern observations deprive all former writers of any authority, since if they had seen what we see, they would have judged as we judge.

Original: Ogni singolo individuo vale quanto pensa di valere.
Source: prevale.net