DQ: If an empiricist can validate his philosophy of empiricism by empirical means, then that would be fair enough. But in the example you gave, the attempt was made to validate empiricism by non-empirical means - namely, via the use of a logical truth deemed to be applicable to all. That is, by Rationalist argument.
EI: I really don't think any empiricists deny reason as a tool altogether. In fact, I'd suggest that there's ample empirical evidence to demonstrate a great deal of effectiveness on the part of reason. What the empiricists rejected was the idea that one could formulate a philosophical system on reason alone.
If you literally mean "reason alone" - as in no mind, no senses, no world, nothing at all, apart from reason - then I would agree with you.
However, if you simply mean that it is impossible to use pure logic to reach timeless truths and to validate them, then you and I would both disagree with that. For example, your belief in empiricism - which, as I have demonstrated, is ultimately supported by Rationalist argument - exposes your disagreement.
I assume you have abandoned the idea that the philosophy of empiricism can be established by empirical means? I mean, you didn't take up the challenge of demonstrating that it can be.
To the empiricist there was no Platonic realm that you could reach into using pure reason to wrangle yourself free some absolute truths.
Except the one which you just plucked that absolute truth out of, presumably.
Let's see now, that makes two absolute truths that empiricists have plucked from the Platonic ether - (1) all knowledge can only be gained through empirical experience, and (2) it is impossible to use pure reason to reach absolute truths. Not bad for a group who deny it can never be done.
And I'm sure there are others as well. For example:
- Everything is uncertain
- The scientific method is the only valid means of acquiring knowledge.
- A theory is only valid if it is falsifiable by empirical means.
And so on. There is probably no end to the number of absolute truths which empiricists pretend they are not plucking from the Platonic ether.
This is the viewpoint of a limited mindset which is stuck in the realm of forms and cannot perceive anything beyond it.They more-or-less introduced the notion that if you couldn't imagine certain abstract concepts as representing actual imaginable things in the sensible world, then it was to be dismissed off-hand as being about nothing; for how could it be about anything real when all thoughts have an essential foundation in our senses, rather then a Cartesian sort-of mind filled with all possible knowledge?
-