"I am familiar with the Bible," Daneel says. "It has limited circulation on Spacer worlds but still has more influence on Earth, and it was necessary, once, for me to understand it."

He turns her words over in his mind, considering. This isn't too far from his own reasoning. "I already, before I came here, was in the position of having to create a corollary to the First Law which I call the Zeroth Law: a robot may not harm humanity, or through inaction, allow humanity to come to harm. It takes precedence to all other Laws. I cannot count myself among "humanity," perhaps, but if I am a person, and equal to a human, then the First Law applies to me as well."

He stops for a moment, his voice having grown strained, and pauses to recover. "I'm sorry. Until I have properly integrated this idea of my personhood, thinking contrary to the Three Laws is... difficult."