which have ever been observed in the sky, the millions of luminous points which constitute the Milky Way, the innumerable celestial bodies, suns of every magnitude and of every degree of brightness, solar systems, planets and satellites, which by millions and hundreds of millions succeed each other in the void around us, that whatever human tongues have designated by the name of universe, do not in the infinite represent more than an archipelago of celestial islands and not more than a city in a