No less insistent is his criticism of fate and chance, or according to his threefold division fortune, fate and chance. He observes that the doctrine of fate moves in a vicious circle, because the eternal series of causes in which it holds the world bound and chained, depends upon the will of Jupiter, and at the same time Jupiter is subject to fate; whence it results that the Stoics are themselves entangled in that "chain of Jupiter" with which they would imprison all things human. These three concepts, corresponding to that of opportunity when an object of desire is in question, to that of good luck in the case of unhoped-for events, and to that of accident in the case of the unexpected, are distinctions of the subjective understanding rather than anything else: objectively they come under one single law which may also be called fortune, if with Plato we recognise opportunity as the mistress of human affairs: and all three are manifestations and paths of the divine Providence which is intelligence, liberty and necessity. The creator of the world of nations "was indeed Mind, since men made it by their intelligence: it was not Fate, because they made it by free choice, nor yet Chance, since to all eternity on doing thus the same results follow." Vico lights up in the most fanciful ways the comedy of errors formed by man's illusions as to the end of his own actions. Men thought they were escaping the threats of the thundering sky by carrying their women into caves to satisfy their animal passions out of God's sight: and by thus keeping them safely secluded they founded the first chaste unions and the first societies; marriage and the family. They fortified themselves in suitable places with the intention of defending themselves and their families: and in reality, by thus fortifying themselves in fixed places they put an end to their nomadic life and primitive wanderings, and began to learn agriculture. The weak and disorderly, reduced to the extremity of hunger and mutual slaughter, to save their lives took refuge in these fortified places, and became servants to the heroes: and thus without knowing it they raised the family to an aristocratic or feudal status. The aristocrats, feudal chiefs or patricians, their rule once established, hoped to defend and secure it by the strictest treatment of their servants the plebeians: but in this way they awoke in the servants a consciousness of their own power and made the plebeians into men, and the more the patricians prided themselves on their patriciate and struggled to preserve it, the more effectively they worked to destroy the patrician state and to create democracy. Thus, says Vico, the world of nations issues "from a mind widely different from, sometimes quite opposed, always superior, to the particular ends set before themselves by men: which restricted ends have been made means to wider ends, and employed to preserve the human race upon this earth."