Oh, and Plato.
Spinoza: His views are tricky, because of his particular brand of monism. You're right that we should generally take the 'Ethics' as a work of a priori reasoning, but nevertheless he considered our knowledge of the contents of nature to be empirical knowledge: in order to know that there is a knife on the table, my mind has to interact with the 'mind' of the knife, and this involves physical contact.
Plato: The trouble with saying something like this about Plato is that he neither deployed the a priori/a posteriori distinction, nor had views similar to our...
Straight from Wikipedia.
I just had to stare at this a while. We can have papers published about this, we really ought to be able to get papers published about Friendly AI subproblems.
My favorite part is at the very end.
Trivialism is the theory that every proposition is true. A consequence of trivialism is that all statements, including all contradictions of the form "p and not p" (that something both 'is' and 'isn't' at the same time), are true.[1]
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