“I feel an unhappiness which almost dismembers me, and at the same time am convinced of its necessity”

Appeal to Youth: Intoxication-Disintoxication (1934).

"A New Refutation of Time" (1946) [" Nueva refutación del tiempo http://www.monografias.com/trabajos11/filoylit/filoylit.shtml"]
Variant translations:
And yet, and yet... Denying temporal succession, denying the self, denying the astronomical universe, are obvious acts of desperation and secret consolation. Our fate (unlike the hell of Swedenborg or the hell of Tibetan mythology) is not frightful because it is unreal; it is frightful because it is irreversible and ironclad. Time is the thing I am made of. Time is a river that sweeps me along, but I am the river; it is a tiger that tears me apart, but I am the tiger; it is a fire that consumes me, but I am the fire. The world, unfortunately, is real; I, unfortunately, am Borges.
Time is the substance from which I am made. Time is a river which carries me along, but I am the river; it is a tiger that devours me, but I am the tiger; it is a fire that consumes me, but I am the fire.
Other Inquisitions (1952)
Source: Labyrinths: Selected Stories and Other Writings
Context: Time is the substance I am made of. Time is a river which sweeps me along, but I am the river; it is a tiger which destroys me, but I am the tiger; it is a fire which consumes me, but I am the fire. The world, unfortunately, is real; I, unfortunately, am Borges.
Context: And yet, and yet... Denying temporal succession, denying the self, denying the astronomical universe, are apparent desperations and secret consolations. Our destiny is not frightful by being unreal; it is frightful because it is irreversible and iron-clad. Time is the substance I am made of. Time is a river which sweeps me along, but I am the river; it is a tiger which destroys me, but I am the tiger; it is a fire which consumes me, but I am the fire. The world, unfortunately, is real; I, unfortunately, am Borges.

Broadcast (27 September 1938), quoted in Keith Feiling, Neville Chamberlain (London: Macmillan, 1946), p. 372.
Prime Minister
Context: I would not hesitate to pay even a third visit to Germany, if I thought it would do any good... I am myself a man of peace to the depths of my soul. Armed conflict between nations is a nightmare to me; but if I were convinced that any nation had made up its mind to dominate the world by fear of its force, I should feel that it must be resisted. Under such a domination, life for people who believe in liberty would not be worth living: but war is a fearful thing, and we must be very clear, before we embark on it, that it is really the great issues that are at stake.

Source: Alice in Wonderland

Written of her experience with actress Marilyn Monroe in a letter to the American author, Fleur Cowles Meyer, in 1961. As quoted in Fragments, by Stanley Buchthal and Bernard Comment (2010)

Tomasz Vetulani o Holandii, niskim kraju http://www.nto.pl/apps/pbcs.dll/article?AID=/20110605/REPORTAZ01/762330357, nto.pl, 5 June 2011 (in Polish)

1990s, Resignation Address (1991)

as quoted by Olgierd Budrewicz in The melting-pot revisited: twenty well-known Americans of Polish background http://books.google.com/books?ei=jntPUNaTMafZ0QHMloGQBQ&id=pc51AAAAMAAJ&dq=Olgierd+Budrewicz%7C&q=Sometimes+I+muse#search_anchor, publish by Interpress, page 36, 1977.