During his lifetime, Henri Poincar published three major philosophical books which achieved great success: "La science et l'hypoth se" (1902), "La valeur de la science" (1905) and "Science et m thode" (1908). After his death in 1913, a fourth volume of his philosophical works was published by his heirs as "Derni res pens es" (1913). The four books constitute the core of Poincar 's philosophic works and were given an ovation by scientific and general...