They saw around them various changes brought about by human agency, and hence they knew the power of intelligence to produce effects. […] Rhea, when about to be delivered of Zeus, besought her parents to teach her how she might save him. […] There is some difficulty about these personages, who are hardly ever mentioned by the poets. […] According to this tradition Rhea, when about to be delivered of Zeus, retired to a cavern near Lyctos or Cnossos in Crete. […] He forthwith sets about erecting a temple, which the hands of numerous workmen speedily raise, under the direction of the brothers Trophonios and Agamedes.