My most vivid impression from this book is Aristophanes' creation myth concerning humanity.

synopsis from Wiki;

"His speech is an explanation of why people in love say they feel "whole" when they have found their love partner. It is, he says, because in primal times people had doubled bodies, with faces and limbs turned away from one another. As somewhat spherical creatures who wheeled around like clowns doing cartwheels (190a), these original people were very powerful. There were three sexes: the all male, the all female, and the "androgynous," who was half man, half woman. The creatures tried to scale the heights of heaven and planned to set upon the gods (190b-c). Zeus thought about blasting them to death with thunderbolts, but did not want to deprive himself of their devotions and offerings, so he decided to cripple them by chopping them in half, in effect separating the two bodies."

The story is wonderfully imagined in the song "Origin of Love" from Hedwig and the Angry Inch .