Echo (mythology) of the details have changed considerably. Almost all references to pagan deities are gone, save Amor who is little more than a personification of love. Narcissus is demoted to the status of a commoner while Echo is elevated to the status of princess. Allusions to Narcissus’ homosexuality are expunged. While Ovid talks of Narcissus' disdain for both male and female suitors, the "Lay" only mentions his hatred of women. Similarly, in the "Lay", Narcissus mistakes his reflection for that of a woman, whereas no mention is made of this in Ovid’s account. Finally, the tale is overtly moralized with messages
Falling in love in love as one of projecting the anima or animus onto the other person, with all the potential for misunderstanding that can involve. Two chemical reactions associated with falling in love are increases in oxytocin and vasopressin; and Elisabeth Young-Bruehl has suggested that "when we fall in love we are falling into a stream of naturally occurring amphetamines running through the emotional centres of our very own brains". With regard to sociobiology, it is stressed that mate selection "cannot" be left to the head alone and must require complex neurochemical support. Critics of such Neo-Darwinism point out that over-simplistic physical