 The trader principle applies to emotional relationships as well. To love or admire someone is to “pay” him for the pleasure one derives from his virtues (1961b: 31)—or, Rand might say in the case of love for a small child, from his personality. It would seem, however, that the trade between parent and child is unequal, given that the child receives both pleasure and material support from the parent. And it is unclear how the trader principle applies at all when a severe disability renders a beloved child or spouse a source of pain rather than pleasure.