G.E. Moore's Paradox refers to a philosophical problem concerning statements that seem contradictory. It typically involves someone asserting, "It is raining, but I do not believe that it is raining." This statement is puzzling because if the person truly believes it is raining, they should not claim to disbelieve it. The paradox highlights issues in our understanding of belief and assertion. It raises questions about how we can hold contradictory beliefs and what it means to assert something while simultaneously denying it. This paradox has implications for discussions in epistemology and the nature of truth.