Where do moral values come from? (Philosophy HL)

The big idea: You already know cruelty is wrong and kindness is good. But stop and ask a stranger question: where did those values come from?

Did you discover them, the way you discover that water is wet — already true, waiting to be found? Or did people invent them, the way we invented money and manners? The whole of meta-ethics starts here.

Notice this isn't a question about what's right. It's the step behind it: what kind of thing a moral value even is. That deeper step is called meta-ethics.

Whichever side you lean to, you still have to say what actually gives us our values. Four answers keep coming up.

Checkpoint — the four sources: In one line: reason, emotion, nature or culture — each is a candidate for where morality really comes from. Hold that — the next step lines up the two strongest against each other.

The oldest fight in the topic is between reason and emotion — and one thinker put it most bluntly.

Hume: reason serves the feelings: David Hume argued that morality comes from feeling, not pure reason. Look at a cruel act, he said: reason tells you the facts — who did what to whom — but the wrongness isn't one of those facts. It's the sympathy and disgust you feel. His famous line: 'reason is the slave of the passions' — thinking helps you get what you want, but it's your feelings that set what you care about in the first place.

Go further — higher-level insight: Notice Hume's move is really a challenge to the 'discovered' side. If wrongness were a fact out there, reason should be able to point at it like any other fact. Hume says it can't — you can list every fact and never hit 'wrong'. That gap between facts and values is the engine of the whole topic; naming it early is a top-band move.

Checkpoint — Hume: In one line: for Hume, morality is rooted in feeling — reason serves our cares, it doesn't create them. Hold that; the next micro asks whether moral facts exist at all.