Nightmare:You were too weak to continue utilizing the gift I gave you. You were nothing before you found me, and you will be nothing now that I am gone.
Luna: But - But Tia has promised -
Nightmare:What good did her promises ever do you?! Your name is spoken with fear and loathing, and so shall it ever be. They will never care for the beauty of the nights you create. Ever will it be Celestia's name on their lips and in their hearts.
Luna: You're lying!
Nightmare:On the contrary, I am the only one who has ever told you the truth, Luna, and this is the truth: Celestia will always be the one to taste the very best of what life has to offer, and all you will ever do is choke on its leftovers.