Early in the 20th Century, the British philosopher G. E. Moore noticed that sentences of a certain form have a quite peculiar feature. Consider:
>I believe it is Tuesday, but today is Monday.
>Today is Monday, but I do not believe that.
>I believe that today is Tuesday, but it’s not true that today is Tuesday.
These statements, when considered as first-personal assessments, instantiate what’s been called Moore’s Paradox. Taking ‘p’ as a variable standing for any well-formed declarative sentence, we can say that Moore’s Paradox is generated by any statement of the following form,
>I believe that p, but not-p.
