Susan Sontag: Other

Frankfurt Book Fair speech (2003)
Context: All modern wars, even when their aims are the traditional ones, such as territorial aggrandizement or the acquisition of scarce resources, are cast as clashes of civilizations — culture wars — with each side claiming the high ground, and characterizing the other as barbaric. The enemy is invariably a threat to "our way of life," an infidel, a desecrator, a polluter, a defiler of higher or better values. The current war against the very real threat posed by militant Islamic fundamentalism is a particularly clear example.

Regarding the Torture of Others (2004)
Context: People do these things to other people. Not just in Nazi concentration camps and in Abu Ghraib when it was run by Saddam Hussein. Americans, too, do them when they have permission. When they are told or made to feel that those over whom they have absolute power deserve to be mistreated, humiliated, tormented. They do them when they are led to believe that the people they are torturing belong to an inferior, despicable race or religion. For the meaning of these pictures is not just that these acts were performed, but that their perpetrators had no sense that there was anything wrong in what the pictures show.

Illness As Metaphor (1978), foreword, p. 3,
Context: Illness is the night-side of life, a more onerous citizenship. Everyone who is born holds dual citizenship, in the kingdom of the well and in the kingdom of the sick. Although we all prefer to use only the good passport, sooner or later each of us is obliged, at least for a spell, to identify ourselves as citizens of that other place.

Regarding the Torture of Others (2004)
Context: The charges against most of the people detained in the prisons in Iraq and Afghanistan being nonexistent — the Red Cross reports that 70 to 90 percent of those being held seem to have committed no crime other than simply being in the wrong place at the wrong time, caught up in some sweep of "suspects" — the principal justification for holding them is "interrogation." Interrogation about what? About anything. Whatever the detainee might know. If interrogation is the point of detaining prisoners indefinitely, then physical coercion, humiliation and torture become inevitable.
Remember: we are not talking about that rarest of cases, the "ticking time bomb" situation, which is sometimes used as a limiting case that justifies torture of prisoners who have knowledge of an imminent attack. This is general or nonspecific information-gathering, authorized by American military and civilian administrators to learn more of a shadowy empire of evildoers about whom Americans know virtually nothing, in countries about which they are singularly ignorant: in principle, any information at all might be useful. An interrogation that produced no information (whatever information might consist of) would count as a failure.

"Melancholy Objects", p. 57
On Photography (1977)

Source: As Consciousness is Harnessed to Flesh: Journals and Notebooks, 1964-1980

Source: In America

Source: As Consciousness is Harnessed to Flesh: Journals and Notebooks, 1964-1980

“‘Thinking against oneself’: reflections on Cioran,” p. 85
Styles of Radical Will (1966)

Source: Death Kit (1967), p.270

Source: Death Kit (1967), p.149

Source: AIDS and Its Metaphors, (1989), ch. 4, p. 125, Farrar, Straus and Giroux ISBN 0-312-42013-7 ; later published in combination with Illness As Metaphor. This combined edition is the one referenced here.