The "golden triangle" of meaning, reason and modality denotes a traditional philosophical view in modern westem philosophy of language and philosophy of logic : a sentence is analytical truth iff it is a priori truth iff it is necessary truth. David Chalmers believes that Kripke severed the traditional "golden triangle" at 70s last century, by distinguishing metaphysical modality from episternic modality, therefore, he attempts to use "epistemie two -di- mensional semantics" to restore the "golden triangle" and coordinate this semantic...