Complex sentence: Cuddy has her doubts, but Wilson argues that House's self-confidence makes him increasingly reckless, so that he could eventually kill a patient by employing some insane treatment, so this would justify lying to House.
Split into simpler sentences: Cuddy has her doubts, but Wilson argues that House's self-confidence makes him increasingly reckless. Because he could eventually kill a patient by employing some insane treatment, this arguably justifies lying to House.