All the reasons which made the initiation of physical force evil, make the retaliatory use of physical force a moral imperative.
Ayn RandLove is an expression and assertion of self-esteem, a response to one's own values in the person of another. One gains a profoundly personal, selfish joy from the mere existence of the person one loves. It is one's own personal, selfish happiness that one seeks, earns, and derives from love.
Ayn RandI want to be prepared to claim the greatest virtue of all - that I was a man who made money
Ayn Rand