> Because if you're the kind of person who believes in "reason" (or science, or the good, or whatever) as the Salvation of Humanity, the notion that it is rooted in the nonrational (or the non-good, or non-whatever) is terrifying, because it points to the irrationality of your own belief.
>
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Arationality rather than irrationality; nonfoundationalism, etc.
Fideism, secularized.
The Keirkegaard revival is apropos.
http://plato.stanford.edu/entries/fideism/
esp.:
2.2
2.2.4
See also Gregory Bateson's "Mind and Nature"