developments of human evolution, and can therefore not instruct us concerning the developments which remain to be completed. Equipped with hardly any memory, they have little or no presentiment. This is why scientific minds feel an insurmountable repugnance to attempt investigations, the uselessness of which they know, and they dare not even confess to a curiosity which they entertain no hope of satisfying. Willingly would the task be undertaken to discover what would happen, were men to become wiser. Plato, Sir Thomas More, Campanella, Fénelon, Cabet, and Paul Adam[1] have reconstructed their particular city in Atlantis, in the Island of Utopia, in the Sun, at Salentinum, in Icaria, in Malaya, and established there an abstract social administration. Others, like the philosopher Sébastien Mercier, and the socialist-poet William Morris, dived into a far-off future. But they took their system of morals with them. They discovered a new Atlantis, and it is a city of dreamland which they have harmoniously built there. Shall I also quote Maurice Spronck?[2] He shows us the French Republic conquered by the Moors, in the 230th year of its foundation. He argues thus, in