Gerry Canavan said this quote

“ Change biology, and you could change society--but could you change society on its own? Were we as a species simply condemned to permanent misery, all because of how we have evolved?This was the conundrum that the Oankali books had posed to her, and the Parables had been intended (but failed) to solve: How do you create a more sustainable, more benign, more livable society when you're stuck working with human beings? ”