Epistemological nihilism

Can someone explain in 25 words or less what epistemological nihilism is all about? The following snippets from the Web confused me as much as they helped. Unfortunately, I forgot to record where I found them. The lengthy article containing them included other difficulties that could lead one to believe that 25 words might not be enough.

'epistemological nihilism which denies the possibility of knowledge and truth; this form of nihilism is currently identified with postmodern antifoundationalism.'
'American antifoundationalist Richard Rorty makes a similar point: "Nothing grounds our practices, nothing legitimizes them, nothing shows them to be in touch with the way things are" ("From Logic to Language to Play," 1986). This epistemological cul-de-sac, Rorty concludes, leads inevitably to nihilism. "Faced with the nonhuman, the nonlinguistic, we no longer have the ability to overcome contingency and pain by appropriation and transformation, but only the ability to recognize contingency and pain" (Contingency, Irony, and Solidarity,
1989).'

'I praise, I do not reproach, (nihilism's) arrival. I believe it is one of the greatest crises, a moment of the deepest self-reflection of humanity. Whether man recovers from it, whether he becomes master of this crisis, is a question of his strength. It is possible. . . .' (Complete Works Vol. 13)

Charles Riggs
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