[Guille]

G.E. Moore, a good friend of Bertrand Russell and one of the founders of logical atomisms (the list can be reduced to: Russell, Whitehead, Wittgenstein and Moore). He developoed a paradox that still has no solution (or I don't know about it). When Wittgenstein heard about this paradox he went in the middle of the night to Moore's house and asked him to repeat the speech in which he stated it. If you have a solution to it, or disagree/agree, let me know here.

The paradox is that it is not a paradox to affirm something and followingly state you don't believe it. It only works in first person. Here is an example:
"It is raining but I don't believe it". The only paradoxical thing about this, is that it is not paradoxical although should be one (apparently).

Do you believe something can be affirmed and not believed at the same time?

This shows again the great un-logicity of languages.