The authentic human being is one of us who instinctively knows what he should not do and, in addition, will balk at doing it. He will refuse to do it, even if this brings down dread consequences to him and those whom he loves. This, to me, is the ultimately heroic trait of ordinary people. They say “no” to the tyrant and they calmly take the consequences of this resistance. Their deeds may be small, and almost always unnoticed, unmarked by history. Their names are not remembered, nor did these authentic humans expect their names to be remembered. I see their authenticity in an odd way: not in their willingness to perform great heroic deeds, but in their quiet refusals to commit villainies. In essence, they cannot be compelled to be what they are not.

Philip K. Dick (1928-1982) American writer

Speech (1978) “How To Build A Universe That Doesn’t Fall Apart Two Days Later”
    (Source)

First collected in Dick's I Hope I Shall Arrive Soon (1985) [ed. Mark Hurst and Paul Williams], where it serves as the introduction.

Lawrence Sutin, editor of The Shifting Realities of Philip K. Dick (1995) (where this is reprinted) suggests this speech was "likely never delivered."