|Intuitionism: A) intuitionism in mathematics assumes that the objects to be inspected, e.g. numbers are only constructed in the process of the investigation and are therefore not finished objects, which are discovered. This has an effect on the double negation and the sentence of the excluded middle.|
B) Intuitionism of ethics assumes that moral principles are fixed and are immediately (or intuitively) knowable.
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|EMD II 119
Intuitionism/Dummett: for the intuitionism there is no way for any sentence to determine that it can be neither verified nor falsified. - Because what could show that it can not be verified, would ipso facto verify its negation.
Ursprünge der analytischen Philosophie Frankfurt 1992
Wahrheit Stuttgart 1982
G. Evans/J. McDowell
Truth and Meaning Oxford 1977
The Varieties of Reference (Clarendon Paperbacks) Oxford 1989