On nursing:

from The Science of Kissing by Sheril Kirshenbaum
“Kissing another person greatly shapes the ebb and flow of hormones throughout our bodies.  The pattern of responses is laid down early; the hormones released in the body of a nursing baby girl, for instance, influence the responses she will have later in life.  As an adult, she will experience positive emotions when she is kissed, hugged, massaged, and touched – thanks to the very same hormones once associated with nursing in infancy.”

On baby wearing:

from Pigs in Heaven by Barbara Kingsolver
“He doesn’t feel fine about Taylor’s being with someone else.  He wants her to get his name tattooed on her person, or have his baby.  Or both.  Jax would like his own baby.  He and Turtle could take it to the park, where they go to observe duck habits.  He would wear one of those corduroy zipper cocoons with the baby wiggling inside, waiting for metamorphosis.  He likes the idea of himself as father moth.”  (I love that image.)