A meticulous literary study, a detective story a la Edgar Allan Poe, a treasure hunt worthy of an adventure novel such are the registers in which will be deciphered the hidden secrets of a poem like no other. Quentin Meillassoux continues his innovative philosophical interrogation of the concepts of chance, contingency, infinity and eternity through a concentrated study of Stephane Mallarme's poem Un Coup de Des jamais n abolira le Hasard, patiently deciphering its enigmatic meaning on the basis of a dazzlingly simple and lucid insight with regard to the unique Number that cannot be another . The Coup de des constitutes perhaps the most radical break in the history of modern poetry: the fractured lines spanning the double page; the typographical play borrowed from the poster form; the multiple interpolations disrupting reading. But the intrigue of this poem is still stranger and has always resisted full elucidation. We encounter a shipwreck, and a Master, himself almost submerged, who clasps in his hand the dice that, confronted by the furious waves, he hesitates to throw. The hero expects this throw, if it takes place, to be extraordinarily important: a Number said to be unique and which cannot be any other . The decisive point of the investigation proposed by Meillassoux comes with a discovery, unsettling and yet as simple as a child s game: All the dimensions of the Number, understood progressively, articulate between them but a sole condition that this Number should ultimately be delivered to us by a secret code, hidden in the Coup de des, like a key that finally unlocks every one of its poetic devices. Thus is also unveiled the meaning of the siren that emerges for a lightning flash among the debris of the shipwreck: as the living heart of a drama that is still unfolding.