"What is REAL?" asked the Rabbit one day, when they were lying side by side near the nursery fender, before Nana came to tidy the room. "Does it mean having things that buzz inside you and a stick-out handle?"
"Real isn't how you are made," said the Skin Horse. "It's a thing that
happens to you. When a child loves you for a long, long time, not just
to play with, but REALLY loves you, then you become Real."
The Velveteen Rabbit, by Margery Williams,