Kant and the utilitarians disagree about something fundamental: what makes an action right or wrong?
Utilitarians say it’s all about consequences. An action is right if it produces the best overall outcome. Save ten lives by sacrificing one? Do it. The math works out.
Kant says that’s backwards. What matters is your intention, your duty. Some actions are wrong regardless of their consequences. Don’t lie, even to save a life. Don’t use people as tools, even for a greater good.
Here’s where it gets interesting in practice.
You find a wallet on the ground. The utilitarian asks: what outcome produces the most happiness? Maybe keeping the money helps you more than returning it helps the owner. Maybe the owner is rich and won’t miss it.
Kant doesn’t care about any of that. You have a duty not to steal. Period. The consequences don’t change what’s right.
Both approaches can lead to the same action for completely different reasons. Returning the wallet might maximize happiness AND fulfill your duty. But when they conflict, you have to choose.
Kant thinks using good consequences to justify bad intentions is a slippery slope. Once you start making exceptions, where does it end?
Utilitarians think Kant’s rigid rules can produce terrible outcomes. Sometimes lying saves lives. Sometimes breaking a promise prevents suffering.
Most people’s moral intuitions pull both ways. We want to do our duty AND create good outcomes.
That tension never fully resolves. It just makes every ethical choice more complicated than either theory admits.
Related reading: