In the Greek mythology sons of Uranos and Gaia, beings of gigantic strength, and of the dynasty prior to that of Zeus, who made war on Zeus, and hoped to scale heaven by piling mountain on mountain, but were overpowered by the thunderbolts of Zeus, and consigned to a limbo below the lowest depths of Tartarus; they represent the primitive powers of nature, as with seeming reluctance submissive to the world-order established by Zeus, and symbolise the vain efforts of mere strength to subvert the ordinance of heaven; they are not to be confounded with the Giants, nor with their offspring, who had learned wisdom from the failure of their fathers, and who, Prometheus one of them, represented the idea that the world was made for man and not man for the world, and that all the powers of it, from highest to lowest, were there for his behoof.