A friend gifted me CS Lewis' 'Mere Christianity,' mostly as a conversation starter I think. Anyway, got through half of it today and we're having a merry discussion. He's Christian himself. I'm not (some of you will find that surprising. Possibly. Okay probably not
).
Anyway, morality is the topic of choice. Lewis seems to have believed that human morality is an external force, that morality is roughly similar everywhere. He uses good argument and analogies to support this point. For instance, he uses the example of a piano. There are many different keys but to get a tune you have to hit the right ones. We know when we are hearing the RIGHT tune. My friend agrees, I disagree. So I built my own analogy to sum my point up.
Morality is a game of cards.
Evolution is the deck.
Society is the hand.
The player is you/the individual.
The reason Lewis sees similarities between different moralities is because all societies draw from the same deck. Other decks are visible - I used the example of bees, whose moral imperative is the protection of the whole to the destruction of the individual - but not within humanity itself on any large scale.
Society determines which moral cards you can play in any given circumstance.
The individual, based upon its own past, memories, upbringing, and brain chemistry, chooses the cards they draw from that limited pool.
My friend's main sticking point is at the individual level, where he claims that the individual choice is where the external, ideal morality is found.
It's been a fun argument.