 For example, "Snow is white" (in English) and "Schnee ist weiß" (in German) are different sentences, but they say the same thing, so they express the same proposition.Two meaningful declarative sentence-tokens express the same proposition if and only if they mean the same thing.Unfortunately, the above definitions have the result that two identical sentences/sentence-tokens may appear to have the same meaning, and thus express the same proposition and yet have different truth-values, e.g.