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davidmathers
on Sept 15, 2009
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A Square Is Not A Rectangle
I'll see your Quine and raise you a Bolzano:
http://plato.stanford.edu/entries/bolzano/
http://plato.stanford.edu/entries/bolzano-logic/
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Search:
http://plato.stanford.edu/entries/bolzano/
http://plato.stanford.edu/entries/bolzano-logic/