Episode 3: Mere Christianity - Chapter 2: Some Objections

In Chapter 2 of Mere Christianity, C.S. Lewis responds to two common objections to the idea of a real moral law:
that morality is just herd instinct, and
that it’s nothing more than social conditioning.
In this video, we walk through why Lewis thinks neither explanation actually works, how our moral decisions involve choosing between instincts, and why appeals to fairness and obligation point to something deeper than biology or culture. These objections sound convincing at first—but Lewis carefully shows where they fall apart.
This chapter pushes us past surface-level explanations and asks a harder question: if morality isn’t just instinct or society, what is it?
👇 Which objection do you hear most often today—instinct or conditioning?