"That's Lore. He's your brother."
Two eyes stare back in the memory—angry, hurt, distrusting. But the owner of the memory does not process any of that. He stands, to greet this person who is like him, this person called his "brother."
Lore had to do it. It was the only way to be sure that Data would be faithful to him no matter what. And when his brother failed the test, he had no choice but to eliminate the only other being in the galaxy who would be intelligent enough to outsmart him and upset his plans. For the sake of his followers.
But Lore would be lying to himself if he didn't acknowledge that the thought of destroying his brother gave him some amount of pleasure. It would have been nice to be rid of him forever. Data has given him nothing but trouble since he was activated.
The fact that Lore actually grew to care about him a little was perhaps the most troublesome part of it all.
But that's all over now. Lore is getting out of here, and he's determined never to see Data again. He's certain that Data won't bother to follow. He never did before.
Lore turns around, a little startled. His brother is standing there, a phaser in hand. Lore can't resist scoffing. As if he would ever…
"You should be careful with that, Brother. Someone could get hurt," he taunts. But he's alarmed to realize that his voice isn't quite as steady as normal.